Mona Lisa ' s Revenge ( TV story ) Mona Lisa ' s Revenge was the fifth story in the third series of " The Sarah Jane Adventures " . As the title suggests , it revealed that Leonardo da Vinci ' s most famous painting , " The Mona Lisa " , was a hostile entity . Furthermore , Clyde Langer ' s exemplary art skills , which Luke Smith had noticed in " The Mark of the Berserker " , became a central point of this story , as did Clyde ' s experiences with alien life having influences on what he drew , and the subject of art in general . Synopsis . Strange forces bring the " Mona Lisa " , on exhibit at an art gallery in London , to life . Clyde , Rani and Luke are at the gallery on a school trip as the " Mona Lisa " rampages with a Sontaran blaster , taken from another painting . Sarah comes to the rescue , but ends up trapped in a painting . It ' s all down to Clyde , Rani and Luke to save the day as the " Mona Lisa " searches for her brother , " the Abomination " , hidden in another place in the art gallery . Plot . Part 1 . In art class , Luke and Clyde discuss his drawing abilities when Mr Chandra enters to tell Clyde that his painting has won first prize in a competition to see the " Mona Lisa " at the International Gallery . Although pleased , Clyde does not recall submitting his work to a competition . Luke had secretly entered it himself . At the gallery , Lionel Harding and Phyllis Trupp examine newly arrived painting from Paris . Despite her clearly having feelings for him , Lionel ignores Trupp ' s attempts at a kiss and the two leave moments before the " Mona Lisa " s hand reaches out . Luke rushes home to tell Sarah about the competition . She interrupts him over the state of his bedroom . Luke snaps and accuses her of wanting him to be perfect , the way the Bane had created him . The next day , after arriving at the gallery , Luke confides his troubles to Clyde and Rani before being led away by Phyllis . After they notice a Chinese Puzzle Box , Lionel arrives to show Clyde his winning painting . Meanwhile , Phyllis reveals her feelings whilst looking at the " Mona Lisa " , who reaches out to grab her . Clyde ' s painting , showing three women holding Sontaran blaster guns , is shown to the class , who applaud his work . Despite feeling slightly embarrassed , Clyde says that he takes comfort in drawing and asks Luke not to tell Sarah that he drew K9 . Lionel takes the class to see the " Mona Lisa " , but is shocked to find Phyllis in the portrait and calls security . Mr Chandra ushers the class out of the gallery , but Luke , Clyde and Rani sneak away to investigate . Meanwhile , Mr Smith informs Sarah of the incident at the gallery to distract her from worrying about Luke . She decides to investigate despite a lack of alien activity . After revisiting Clyde ' s painting , Rani notices one of the Sontaran guns is missing . Moments after Lionel arrives , the " Mona Lisa " appears and holds the missing gun on them . She opens fire on the group before cooperating with Lionel . Sarah arrives at the gallery , having spoken with Haresh . She notices two different alien energies in the gallery . Meanwhile , Luke is adamant in his resolve not to seek Sarah ' s help and the three discover the police and gallery staff trapped inside various paintings . " Mona Lisa " remembers Lionel from his previous visits to the Louvre . She tells him to help find her " brother " , a painting done at the same time and place . It is in the gallery . As they try to escape , Luke notices Sarah ' s car outside . Meanwhile , Sarah enters the chamber where Phyllis is held , where she is discovered when Lionel and the " Mona Lisa " arrive . The " Mona Lisa " tells Sarah not to interfere , referencing Luke ' s earlier conversations , and imprisons her in a painting . Luke , Clyde and Rani arrive too late to save her after they hear her screaming . Part 2 . Luke , Rani and Clyde beg the " Mona Lisa " to release Sarah from the painting . When she refuses , Luke pushes her over and escapes with Sarah ' s painting . Rather than chase after them , the " Mona Lisa " brings " the Dark Rider " from his painting to eliminate them . The three youngsters avoid his shots , while Lionel and the " Mona Lisa " proceed through the gallery to locate her " brother " , " The Abomination " , whose groans and grunts echo through the building . " Mona Lisa " pauses on her quest when she catches sight of a window . She asks to step outside . Lionel opens the window for her , but she panics when her outstretched arm returns to its painted self . The two enter an unfinished room in the gallery , where Clyde walks in on them . He tries to hide , but is captured by the Dark Rider after overhearing their plans to release " The Abomination " . Luke and Rani try to figure out why the " Mona Lisa " is alive . Clyde is forced to accompany " Mona Lisa " and Lionel as they try to find the hidden painting in the basement . Luke and Rani realise the paint used to create both paintings came from a sentient rock that fell to Earth . Meanwhile , the " Mona Lisa " , Lionel , Clyde and the Dark Rider discover the caged " Abomination " painting in a locked cabinet . However , the puzzle lock is missing . Luke realises the Chinese Puzzle Box is needed to release " The Abomination " . He is confronted by the " Mona Lisa " and Lionel . The " Mona Lisa " tells them she has Clyde in her possession . Upon receiving the box from Luke , Lionel smashes the box . Before she can shoot Lionel , Luke tells her of another way to release " The Abomination " . " Mona Lisa " takes Luke and Rani to Clyde , whom Luke tells to draw a new Chinese Puzzle Box . Despite his and Rani ' s concerns , Clyde draws a new one . The " Mona Lisa " animates the box and uses it to open the cabinet holding " The Abomination " . As the door opens and the energy is released , Luke opens the sketchpad to the drawing of K9 , allowing it to animate . The drawn K9 zaps " The Abomination " , which prevents it from escaping , sending the " Mona Lisa " and the " Dark Rider " back into their paintings forever . Clyde is left puzzled when he looks round for K9 and discovers he has vanished . Everyone who was imprisoned in the paintings is now released , and Luke and Sarah are reunited , as well as Lionel and Phyllis . Despite his apologies and eagerness to start a relationship , Phyllis angrily leaves Lionel in the chamber while Sarah and the group reflect on the day ' s events . Sarah almost feels sorry that " Mona Lisa " is a consciousness trapped in a painting , though being trapped in a painting has soured her opinion of the woman . She praises Luke for being her clever , resourceful , and dependable son , who notes he is also messy and promises to clean his room when they get home . In the meantime , Sarah thinks she needs to have a chat with Clyde about featuring Sontaran blasters in his artwork . He looks at her discouragingly until she puts her arm around him , letting him know she ' s just teasing , and the group smiles .