Through Imperial Eyes " Through Imperial Eyes " is the seventeenth episode of the animated television series " Star Wars Rebels " third season . It is the fifty - fourth episode of the series overall . It aired on February 25 , 2017 , on Disney XD and aired on March 18 , 2017 , on Disney Channel . Official description . " As Thrawn ' s search for the Rebel spy intensifies , Ezra looks to extract Kallus and bring him to the Rebel base . " Plot summary . The shuttle thief . Imperial Security Bureau Agent Kallus is woken up in his personal quarters by an alarm . When Kallus opens his door , he sees stormtrooper s running down the corridor . A stormtrooper stops and tells him that they are preparing for battle stations . He closes the door , walks to his wash basin , turns on the tap and stares at his reflection in the mirror . Shortly after , Kallus enters the bridge of an " Arquitens " - class command cruiser orbiting the planet Lothal . Kallus asks Lieutenant Yogar Lyste if they are under attack , but Lyste tells him he is preparing to intercept a stolen shuttle that has blasted its way out of the Lothal spaceport . Lieutenant Lyste orders the bridge crew to prepare the ship ' s tractor beam projector . The shuttle turns out to be a Star Commuter 2000 . TIE fighters damage the shuttle ' s right fin . After the tractor beam captures the shuttle , Kallus states he ' ll lead the boarding party and heads off to deal with the problem . In the landing bay , Kallus meets the stormtrooper boarding party as they forcibly drag out a helmeted bounty hunter , who , when his helmet is removed , is revealed to be the rebel Ezra Bridger . Ezra is defiant to his captors , and when he notices Kallus staring at him , he yells " What ' re you looking at , Imperial scum ? " Kallus orders his men to bring Ezra to the detention block . Another stormtrooper escorts two droids off the shuttle , who are the disguised rebel astromech droid Chopper and the former Imperial RA - 7 protocol droid AP - 5 , who claims that the two droids were onboard when the shuttle was stolen . A stormtrooper tells them to wait for processing , and AP - 5 replies they can do that just fine , while nodding to a beeping Chopper . An unexpected reunion . Kallus accompanies Ezra and the stormtroopers to the detention block . After the stormtroopers throw Ezra into a cell , Kallus tells them to leave him to interrogate the prisoner alone . He uses his code cylinder to switch off the security cameras in the cell , and scolds Ezra for getting himself captured and thus endangering them , to which Ezra tells him most stormtroopers doesn ' t even know what he looks like now . Kallus tells him he hopes that ' s true , as he will be executed for treason should his collusion with the rebels be discovered . Ezra tells Kallus that the rebels think the Empire monitored his most recent Fulcrum transmission . Kallus is shocked that Ezra got captured just to warn him , to which the youth replies that he came to get him out . Kallus scowls that he has no choice now . The two agree to trust each other just as Lieutenant Lyste orders the guards to open the cell immediately . Ezra feigns being torture d by Kallus , saying that he will tell him anything . Lieutenant Lyste is impressed that Kallus has already managed to get Ezra to confess , but tells him that the interrogation will have to wait because Grand Admiral Thrawn ' s fleet has just arrived . Lyste informs Kallus that Thrawn has summoned them to come aboard his ship , and orders the guards to bring the prisoner along . When Kallus asks why , Lyste says he wants to show Thrawn how effective he is in dealing with the rebel threat . Kallus insists that the prisoner is just a bounty hunter , and Lyste responds that " He ' s from Lothal . That ' s enough . " Ezra ' s helmet is left behind in the cell . As Kallus , Lyste and Ezra head towards the cruiser ' s landing bay , they encounter AP - 5 and Chopper . When Lyste demands to know why they are coming , AP - 5 claims that his counterpart has a recording of the shuttle theft , which Imperial protocol orders them to provide as testimony against the shuttle thief . Lyste allows the droids to come along . Lieutenant Lyste , Agent Kallus , Ezra and the droids travel aboard a " Sentinel " - class landing craft to Thrawn ' s flagship , the Imperial Star Destroyer " Chimaera " . During the journey , Lyste relates that he has not been summoned for a meeting with high - ranking officers since the incident with the Princess from Alderaan , which he recalls was unpleasant . Lyste hopes to make a better impression this time , and Kallus reassures him that he will . Infiltrating the " Chimaera " . The flight operator tells Shuttle TYA77 to transmit their clearance codes to the " Chimaera " , which allows them to dock in the Star Destroyer ' s hangar . The shuttle lands , and Lyste tells Thrawn ' s orange - pauldron ed stormtroopers that he has brought a prisoner for the Grand Admiral . The Stormtroopers take Ezra to Detention Block B7 . AP - 5 tells Chopper they need to update their status to the retrieval team . Chopper beeps in reply . Meanwhile , the retrieval team , Kanan Jarrus and Rex , are flying a stolen shuttle through hyperspace when Chopper tells them they are aboard Grand Admiral Thrawn ' s Star Destroyer . When Rex asks what they are doing there , Kanan translates that Chopper is saying that the Imperials transferred Ezra there after he got captured . Rex is alarmed because they only obtained the clearance codes for the light cruiser , not the " Chimaera " . Kanan tells Chopper to get them the right clearance codes , and he beeps in affirmative . Back on the " Chimaera " , AP - 5 tells Chopper he can ' t download the clearance codes from any normal terminal and that they have to find an officer ' s port . Meanwhile , Kallus and Lieutenant Lyste walk past several Imperial officers , Captain Brunson , Commander Brom Titus and Captain Slavin , on their way to Thrawn ' s office . All have their hands behind their backs and are being escorted by stormtroopers . Lyste recognizes the individuals as Sector Command staff , and asks " What are they doing here ? " Kallus , who suspects that Ezra was right , replies that he can only guess . The two approach Grand Admiral Thrawn ' s office , and the stormtrooper on guard demands they submit their code cylinders for verification . Lyste protests this , on the grounds that he is a lieutenant and therefore an officer . Unmoved , the sentry simply repeats his demand , and Kallus explains that Thrawn is known for being thorough as he hands over his code cylinder . Reluctantly , Lyste hands his over , and the sentry allows them to proceed inside Thrawn ' s office after verifying the cylinders . Thrawn and a familiar face . Inside Thrawn ' s office , the two Imperial officers find Thrawn sparring with two Imperial sentry droid s . When Thrawn notices their presence , he issues the override code " Rukh " , and the two droids enter hibernation mode . Admiral Kassius Konstantine tells Lyste and Kallus that " he " is ready for them , before introducing the two visitors to the ISB Colonel Wullf Yularen , Kallus ' former instructor . Yularen is pleased to see his former star pupil , whom he keeps tabs on . When Kallus asks what brings him to Lothal , Thrawn enters and replies that they ' re in need of his expertise : there is a Rebel spy in their midst , codenamed " Fulcrum " . Thrawn vows to learn their true identity today . Kallus slowly nods in response , as he realizes that Ezra was right . After returning to his desk , Thrawn explains to the trio that Fulcrum is a traitor in the Imperial ranks who is feeding the local Rebels information , attributing the recent Imperial failures and Rebel successes to this mole . Jumping at the chance to prove himself , Lieutenant Lyste vows to do everything in his power to find this spy . Thrawn thanks Lyste for his enthusiasm , but warns him that nobody is above suspicion and that Colonel Yularen will interrogate each of them . Colonel Yularen tells them to be vigilant , and to watch their subordinates closely and their peers even more closely . Thrawn insists that their search must be done quickly , because he is on the verge of locating the rebel base in the sector . When Konstantine asks Thrawn how he narrowed his search down to 94 systems from among thousands , Thrawn explains that he has calculated the possible locations of the rebel base based on their proximity to attacks on Imperial ships and facilities , and most importantly their proximity to Lothal . Thrawn then dismisses Kallus , Lyste , Konstantine and Yularen . On their way out , Colonel Yularen stops Kallus and asks him who he thinks the traitor is based on his multiple encounters with the Rebels . Kallus states that Fulcrum is definitely an officer , since it was a high - level intelligence leak . When Yularen inquires about how the spy is proficient with transmitting to the Rebel Network without the Empire ' s knowledge , Kallus suggests that the traitor is in the Communications Division . However , Yularen thinks that is too obvious , and speculates that the spy has a transmission system they are unaware of . Kallus offers to do anything he can to help , and Yularen responds , " I ' ll let you know . " Kallus leaves , and Yularen reenters Thrawn ' s office . Aiding the enemy . After exiting Thrawn ' s office , Lieutenant Lyste tells Kallus that no traitor escapes the eye of Yularen for long . Kallus responds that they shall see . The two are then joined by Governor Arihnda Pryce , who asks Kallus about the shuttle theft . He tells her that Lyste is actually the one who deserves credit , and Pryce tells Lyste that he deserves commendation for it , before leaving . In private , Kallus sows disinformation by telling Lyste that the Imperial Security Bureau is watching her , which makes Lyste believe Governor Pryce is Fulcrum . While speaking to Lyste , Kallus switches Lyste ' s code cylinder for his own . Kallus then tells the ambitious Lieutenant to keep an eye on Pryce . After Lyste leaves , Kallus smirks and heads off to get Ezra . Meanwhile , Governor Pryce meets with Thrawn and Yularen . When she inquires about their progress , Thrawn tells her that he is certain that the spy was present at their interviews and now they must wait , expecting that they will take the bait and warn the Rebels about the potential discovery of their base . Yularen reports that a coded Rebel message was beamed off the " Chimaera " after an offship prisoner was transported to Detention Block B7 . Thrawn decides to visit the prisoner himself . Down in the detention block , Kallus finds AP - 5 and Chopper arguing about whether to get the codes before they release Bridger . Kallus shuts off the surveillance with Lyste ' s code cylinder , and solves the issue by leading them to Ezra ' s cell . Upon entering the cell and finding it seemingly empty , Kallus exasperatedly tells Ezra to stop hiding on the ceiling , with the boy responding that it worked on previous occasions . When Ezra insists on getting out , AP - 5 reports that they won ' t be able to leave the " Chimaera " without the proper clearance codes . Kallus frees Ezra and tells him that Thrawn is close to locating the Rebel base . Kallus wants to know where the Rebels ' base is so that he can delete it from Thrawn ' s star chart . Not fully trusting Kallus , Ezra insists on keeping it a secret . Kallus counters that doing so would allow Thrawn to find their base , and reiterates that he can remove the planet from Thrawn ' s list . AP - 5 interjects by pointing out that they can accomplish both goals – acquiring the clearance codes and altering Thrawn ' s database – by accessing Thrawn ' s office . Ezra agrees , but states that they don ' t know if Thrawn will be in his office or not . Kallus contacts Lieutenant Lyste , who reports that Pryce is heading with Thrawn and Yularen to the detention block . Kallus tells Lyste to keep his eye on Pryce and remain hidden . Kallus , Ezra and the droids go off to get Ezra an Imperial uniform . When Thrawn enters the detention block with Pryce and Yularen , he finds that the surveillance system has been deactivated , and Pryce notes that the guards are missing . After discovering the prisoner is missing , Yularen tells Thrawn and Pryce that the code records indicate that Lieutenant Lyste was the last person to enter the detention block . This makes the trio realize that the shuttle thief is a Rebel , and that Fulcrum freed him . Breaching Thrawn ' s office . Outside Thrawn ' s office , Ezra states that he preferred the bounty hunter outfit , and Kallus responds that they all need to make sacrifices . Ezra tells AP - 5 to wait in the corridor for any sign of Thrawn , which he sighs is a thankless job . Kallus gets Ezra to use a Jedi mind trick to convince the stormtrooper on guard that he is Lieutenant Lyste and that Admiral Thrawn told him to expect them . Ezra hands the guard Lyste ' s code cylinder , and the guard verifies it and allows Ezra , Kallus and Chopper to enter the office . Seeing Hera ' s Kalikori on display , Ezra tries to recover it , but Kallus warns him they are not here to steal art . Ezra counters that Chopper just stole the codes , and tells Chopper to transmit the clearance codes to Kanan and Rex . When Kallus states that the Empire will track the transmission , Ezra responds that all the Imperials will get is that a rebel transmission was made from Thrawn ' s office . Kallus accepts Ezra ' s explanation . Chopper then transmits the codes to Kanan and Rex . Rex tells the team to meet them in the " Chimaera " hangar . Examining Thrawn ' s star chart , they find that Thrawn is close to locating Atollon , the site of the rebel base . Kallus tells Chopper to erase Atollon and add another planet as a decoy . AP - 5 then contacts Kallus to warn him that Thrawn is approaching , and Ezra orders the protocol droid to stall the Grand Admiral . In response , AP - 5 notes that it is too late , as Thrawn is already at the door . Kallus tells Ezra he ' ll handle it , and exits the office . The stormtrooper sentry tells Thrawn that " Lieutenant Lyste " is inside . Believing Lyste to be the traitor , Thrawn tells the sentry to ready his weapon and follow him , and enters his office with his armed guards . Ezra orders Chopper to shut off the holomap , and turns to tell Kallus they need to leave , only to wonder where he went . They hide behind a piece of graffitied retaining wall on display just before Thrawn enters with his guards . While Thrawn examines his map , Kallus sneaks into Thrawn ' s gym and tampers with his droids . After he switches the map off , the stormtroopers ask Thrawn if everything is all right . Thrawn replies in the affirmative , just as his training sentry droids enter , attacking and overpowering both guards . He issues the override code , but this has no effect on the droids . Thrawn is then forced to fight the droids , and catches sight of " Lyste " fleeing the room . Ezra compliments Kallus on his plan to set assassin droids on Thrawn , and they flee with AP - 5 and Chopper in tow . Back in his office , Thrawn manages to shoot the droids with one of the stormtroopers ' blaster s . Thrawn then contacts Colonel Yularen via comlink and tells him to listen carefully . Helping the Rebels escape . Meanwhile , Rex and Kanan exit hyperspace above Lothal to discover Thrawn ' s Seventh Fleet orbiting the planet . When Kanan asks Rex to fill him in , Rex says there are a lot of ships . Kanan asks how many , and Rex tells him not to worry about it and to transmit the codes . A communications officer reports that Shuttle TY992 is cleared to land , and Colonel Yularen orders his men to contact Governor Pryce . A disguised Kanan and Rex land in the " Chimaera " hangar bay , and Rex jokes about having lost weight . Ezra , Kallus and the droids reach the hangar only to find Governor Pryce greeting the disguised Kanan and Rex . Pryce orders them to remove their helmets because she is arresting them , having determined that the " stormtroopers " are disguised rebels . Kanan tries to mind trick Pryce , and she orders one of Thrawn ' s stormtroopers to stun him . Rex fires at the trooper and then fights Pryce in hand - to - hand combat . Lyste sees the fight and , thinking that Pryce is fighting real stormtroopers , concludes that she " is " the traitor . Chopper seals the doors just before stormtrooper reinforcements arrive . Ezra and the droids run for the shuttle , but Kallus heads to the side of the hangar . Yularen , arriving , watches the fight from above . Pryce manages to get hold of a blaster , just as Kanan recovers . Before she can shoot Rex , Lyste stuns Pryce , stating that he ' s got the Rebel spy . Upon seeing this , Yularen is surprised , and he leaves his vantage point . Lyste turns to the " troopers " and " officer " and asks " Trooper , are you all right ? " , only to discover that the officer is the shuttle thief Ezra , who tells Lyste , " Wrong choice . " Kallus then tackles him to the ground and switches their code cylinders back . When Ezra reminds Kallus that they need to go , Kallus tells him that there has been a change of plans now that he has captured " Fulcrum " , and that he can do more for the Rebellion undercover . The rebels flee on their shuttle just as Colonel Yularen and his stormtrooper reinforcements blast their way into the hangar . Kallus grabs Lyste and denounces him as the rebel spy . Yularen orders the stormtroopers to take Lyste away . Lyste protests his innocence and claims that Pryce is the Rebel spy , asking Kallus to vouch for him . Kallus remains impassive , as he intended to do this all along . Thrawn ' s debriefing . In Thrawn ' s office , Yularen informs the others that Lyste ' s code cylinder confirms his suspicion that Lyste was the rebel spy who used it to override security , release the prisoner , and contact the enemy . Pryce , rubbing her shoulder , adds that she has her own proof of Lyste ' s alleged treachery , and thanks Agent Kallus for saving her life . Konstantine also congratulates the ISB agent . Kallus apologizes for failing to stop an assassination attempt on the Grand Admiral . Thrawn tells Kallus that no apology is needed because the attempt did not succeed , and that the Empire will make a note of his achievements . Thrawn then dismisses Agent Kallus , Governor Pryce and Admiral Konstantine . In private , Yularen remarks that things fell into place a little too perfectly for his liking . He also tells Thrawn that Lieutenant Lyste is too naïve and inexperienced to be capable of the treason he ' s been accused of . Thrawn agrees just as a stormtrooper brings in Ezra ' s helmet . When Thrawn asks Yularen to comment on the design , Yularen remarks that it is some kind of beast . Thrawn replies that it is a stylized expression of a loth - cat , a native creature of Lothal . Thrawn identifies the helmet as the work of the rebel Sabine Wren and surmises that Ezra Bridger is the owner of the helmet . When Yularen asks why Kallus did not tell them that Ezra was the shuttle thief , Thrawn deduces that Kallus is the real Fulcrum and angrily explains to Yularen that Kallus used Lyste ' s code cylinder to implicate the Lieutenant , and that he also used the young Jedi ' s power to access his office and reprogram his droids . Thrawn adds that it was done very skillfully . A shocked Yularen laments that he never would have guessed that one of his best pupils would be capable of this betrayal . Thrawn tells Yularen that is why he and many others have been deceived , and opines that Kallus will be more useful to the Empire as Fulcrum than he ever was before .