Night Terrors ( episode ) The " Enterprise " crew is affected when they are adrift in a remote area of space , and find themselves unable to dream . Summary . Teaser . The is given orders to find a lost Starfleet vessel , the . They come upon the ship adrift in an unexplored binary star system . Beaming on board , an away team finds the entire crew murdered , except for a Betazoid , Andrus Hagan , the " Brattain " s scientific advisor who is catatonic . Act One . In sickbay , Doctor Beverly Crusher informs Captain Picard that some of the " Brattain " s crew were found barricaded in their quarters , some who obviously fought hand - to - hand . They identify Hagan , but Counselor Troi cannot get through to him . As Crusher and Picard leave , however , she then hears him describe voices " out there . " Data , Geordi La Forge , and Commander Riker unsuccessfully try to figure out the engine malfunctions aboard the " Brattain " so the ship can get to the nearest starbase . Crusher reports to Picard in his ready room that there is no indication of a psychological or physiological disease based on the autopsies of the crew , leaving the growing madness on board the " Brattain " , as detailed in the last log entry of Captain Chantal Zaheva unexplained . She had her first officer , Commander Brink , " eliminated " for suspicion of mutiny . All 34 of the crew killed each other , with no alien presence . In the meantime , Counselor Troi has entered a rather intense dream . Spoken to by an unidentified voice , she asks the speaker " " Where are you ? " " . The voice repeats the phrases " " eyes in the dark " " and " " one moon circles " " as Troi is drawn toward two lights that are reminiscent of the binary star system in which the " Enterprise " is currently stationed . Act Two . With little progress , Picard decides to tow the " Brattain " to Starbase 220 . Unfortunately , now the " Enterprise " crew begins to experience her own problems , marked by an inexplicable increase in irritability and fatigue . On the " Brattain " , La Forge has to reassure a crewman who apparently heard some noises when no one was there , acknowledging that the thirty - four dead people found aboard would make anyone uneasy . And on the " Enterprise " , conflict is spreading all over the ship ; when Keiko O ' Brien enters the O ' Briens ' quarters , she and Miles quarrel , during which Miles displays a great deal of envy towards one of his wife ' s co - workers , Tom Corbin . Miles leaves their quarters and enters Ten Forward , where he is warned by Chief Gillespie about the current events . O ' Brien brushes the warning off , dismissing it as " ghost stories " . In the meantime , Picard is in his ready room when the door chimes . He says " " Come " " several times , but no one enters , and yet the chimes repeat . He finally goes to the door and sees no one there . The door continues to chime and finally someone knocks . At the door are Troi and Crusher . They say that the occurrences of violence aboard the " Enterprise " are continuing to escalate . Captain Picard gives the order for the ship to retreat to a safe distance from the " Brattain " , only to find that all energy expended by the ship ' s engines is drained by the anomaly , rendering the ship unable to move , like the " Brattain " . Act Three . The " Enterprise " is now adrift for awhile , and will not get assistance for two weeks . In the observation lounge , Data reports that it is actually trapped inside a space - time anomaly known as a Tyken ' s Rift , named after a Melthusian named Bela Tyken who had escaped a similar rift by detonating his cargo of anicium and yurium . However , they don ' t have the energy to reproduce the situation . Furthermore , there weren ' t any cases of unusual conduct among their crew . Picard and Riker talk in the turbolift while going to the bridge and Riker says that sometimes he feels like someone is in his quarters , waiting for him . With grave importance on keeping their faculties intact , Picard relieves Riker for a few hours , telling him to get a nap . Riker obeys but as soon as he leaves and the door shuts , Picard thinks the turbolift ceiling is coming down on him . The door opens and the crew see him screaming . It ' s only a hallucination , but it ' s enough to make him feel that he needs Data for their continued survival while they try to find a solution to leave the Tyken ' s rift . Meanwhile , Dr . Crusher is taking brain tissue scans of the dead " Brattain " personnel in the morgue , with the intention of comparing them to a random cross - section of the crew . As she does so , she fights off the hallucination that the bodies are moving and even sitting up . Later , in Picard ' s ready room , Dr . Crusher hypothesizes that the rampant outbreaks of violence aboard both ships are due to lack of rapid - eye movement ( REM ) sleep , leading to fatigue , loss of concentration , extreme irritability , hostility , and ultimately , insanity . However , this is not being caused by the Tyken ' s Rift . Crusher notes that Troi can sleep , and Troi notes that she is the only person aboard the ship who continues to be able to dream , perhaps due to her unique telepathic abilities , but that all of her dreams are nightmare s . She believes the crew will eventually meet the same fate as the " Brattain " . Act Four . Troi , fatigued due to her nightmares , continues to listen to Hagan without any more information . She remarks to Dr . Crusher about the contrary situation the Betazoids and Humans have , but still with a dire ending . She takes a break to go to the bridge . Data and La Forge in engineering signal to the bridge to execute their earlier plan of using a deflector burst to disrupt the Tyken ' s Rift . La Forge is losing his concentration , so Data helps him out . However , though it is unsuccessful since the energy was still absorbed into the Rift . Meanwhile , the rest of the crew are behaving irrationally . Gillespie expresses desire to fight instead of waiting until he meets the " Brattain " . Worf feels so helpless after the deflector burst attempt that he tries to commit suicide in his quarters . He feels that he is no longer a warrior because he is afraid of whatever is causing their sleeplessness . Troi fortunately runs to his quarters and manages to convince him to put the knife down , telling him that whatever is tormenting them is just an illusion . He agrees to go to sickbay , and it is a sign of the bizarre atmosphere aboard the ship , to see the hulking Klingon warrior being led by the hand like a frightened child by the diminutive Betazoid . Act Five . Data has assumed command of the " Enterprise " since Picard , like most of the crew , cannot function . Fortunately , Troi has a breakthrough with Hagan , and reports to Picard in his ready room that she thinks there are aliens trying to communicate telepathically because they are trapped . Data says it ' s plausible there ' s another ship in the rift , and , if so , they could free themselves by working together to create an explosion . At the bridge science station , Data investigates elements to use for creating an explosion , though Troi realizes one of her message " one moon circles " refers to a hydrogen atom . If the " Enterprise " releases hydrogen toward the other ship , and Troi sends the message to act , they could produce the necessary explosion . Troi goes to sickbay to be put to sleep ; Data says she only has two minutes to send the message . Data prepares the release , and assumes the role of acting captain of the " Enterprise " when he finds Picard slow to respond , ejecting the hydrogen into the space immediately in front of the ship through the Bussard collector s . To get more power , Data orders all crew to go to designated emergency shelter areas so unoccupied parts of the ship can be taken off of life support . The crew in Ten Forward thinks the situation is an experiment and want to mutiny , led by Gillespie . Guinan realizes that something might happen and calls security . As soon as security enters , a fight breaks out . Guinan takes a weapon she acquired from Magus III from behind Ten Forward ' s bar and fires it into the ceiling . The shock value of the sight is enough in stopping the fight . Just after there is no longer sufficient power to maintain the hydrogen stream leaving the Bussard collectors , an explosion erupts in front of the ship , indicating that Troi was successful . Power and life support are restored to normal , allowing the " Enterprise " and the alien vessel to escape the rift , although the " Brattain " is apparently left behind . As his last duty as acting captain , Data orders Picard and the rest of the crew to their quarters to sleep . Data leads the " Enterprise " to Starbase 220 . Memorable quotes . " " Eyes in the dark . . . one moon circles . " " " " First officer Brink and his men were behind it . They got to the engines , they don ' t work anymore . Had to eliminate Brink ! " " " " All 34 of them appear to have killed each other . " " " " What could have caused such an event ? Drugs ? A virus ? Poison ? " " " " There is an inevitable conclusion to this pattern and if I can ' t find a way to stop it . . . we will all go insane . " " " " I will need to rely on you from now on . We may need to count on you for our very survival . " " " " I will do my best , sir . " " " " I am no longer a warrior ! I am no longer strong ! I feel . . . " " " " What ? What do you feel ? " " " " . . . I feel fear . " " " " To admit that you ' re afraid gives you strength . " " " " What is " that " ? " " " " This is a little souvenir I picked up from Magus III . That was setting number one . Anyone wanna see setting number two ? " " " " Sir . . . as my final duty as acting captain . . . I order you to bed . " " " " Pleasant dreams , sir . " " Links and references . References . anicium ; antimatter pod s ; autopsy ; autopsy report ; Balthus ; Betazed ; Betazoid ; binary star system ; biology ; Borg ; brain tissue ; ; Brink ; Bussard collector s ; calendenium ; Cardilia ; catatonic state ; chemical imbalance ; coffee ; ; cortical scanner ; deflector dish ; deuterium injector ; directed dreaming ; distress call ; drug s ; electron ; energy ; entorhinal cortex ; field generator ; frequency ; ghost story ; headache ; hydrogen ; impulse engine ; isozyme ; Kaladian thorn flower ; Kenicki ; laticifer ; life support system ; Magus III ; Magus III energy weapon ; magnetic containment ; matter valve s ; Melthusian ; Melthusian starship ; ; mutiny ; Number one ; ontogeny ; phaser ; photon torpedo ; plant biology ; plant biology lab ; PGO signal ; poison ; polymorphism ; positron emission sensor ; power coil ; propulsion system ; proton ; rat ; REM sleep ; scientific advisor ; snake ; somatic drug ; Starbase 220 ; Starfleet ghost ; suicide ; telepathy ; theta wave ; thruster ; tractor beam ; turbolift ; ; Tyken ' s crew ; Tyken ' s Rift ; Tyken ' s Rift being ; virus ; visual cortex ; warp drive ; warp tow ; yurium Okudagram references . Adams Research Group ; antimatter ( antideuterium ) ; avitable compound 283 ; Balter compound 298 ; Balter detonator ; bio - genovesium ; bioneutralization ; Bishop / P 374 ; Blitmanite ; Blitmanite 834 ; brown tricobalt 126 ; carbon ; Cervantes fusion explosive ; clancium oxide ; class H ; class K planet ; class N ; class R ; deuterium ; electrolytic fractioning ; electrolytic recycling ; electronic pulse actuator ; emergency disconnect explosive bolt ; emergency jettison thruster ; engineering ; Evora oxide ; firefighting ; fuel ; fusion reactor ; gamma pulse ignition device ; Grant thermite 893 ; Gronerium compound 3983 ; Hoffmeisterite compound 239 ; hutzelite 27 ; hydrogen ; impulse propulsion system ; laser detonator ; Lauritson solid 451 ; Lichfield suspension ; long - range impact probe ; Ludovko IX ; magnesium ; magnetic confinement pod ; medical tricorder ; microfusion device ; microwave pulse ignition device ; microwave pulse detonator ; mining ; molnar composite ( thermal ) ; mooride polyronite B ; moyerite ( synthetic ) ; neussite 283 ; nuclear explosive ; organic waste ; oxygen ; pastorium liquid 342 ; Pl cohesion ; plutonium ; plutonium ryanite ; radioisotope ; remote spectroscopy vaporization device ; Rossium - K ; R ' M ' Yr B ' rneht Institute ; Ryan Crystals 8489 ; sarium krellide ; saurium krellide 024 ; shelf life ; specific impulse ; standard year ; Starfleet Regulations ; sodium ; solid rocket motor device ; sternbachium ; takemurium 9839 ; terraforming ; thermal grantium compound ; thermal pulse ignition charge ; toddtracium ; toxicity ; tricorder ; tri - nikolas powder ; type VI reactor ; type 12 Hillebrand detonator ; type 43 fusion detonator ; ullage thruster device ; ultritium ; ultritium 283 ; ultritium 342 ; ultritium compound 902 ; vernier thruster device ; walkerite 342 ; warp propulsion system ; Wynsdey III Dedication plaque references . 40 Eridani A Starfleet Construction Yards ( 40 Eridani A ) ; Advanced Technologies Division ; ; ; ; Exploratory Division ; Fleet Administration ; Fleet Operations ; Fleet Yards Operations ; ; ; ; Mission Operations ; ; Orbital Operations ; ; ; ; ; Starfleet Academy ; Stellar Imaging Division ; Tactical Command ; ; Yoyodyne Division