Thinktwice ( comic story ) Thinktwice was a Tenth Doctor comic strip story in " Doctor Who Magazine " that returned Vessica n Majenta Pryce to the Tenth Doctor ' s life . It was significant for making Pryce a regular character in the pages of " DWM " . For the first time since the use of Destrii in " The Flood " — which is to say , for the first time since the beginning of the BBC Wales series — " Thinktwice " gave " DWM " a regular companion created by their staff , rather than one seen on television . It also included references to several of these past " exclusive " companions . Thinktwice also began a loose story arc to which Pryce ' s introductory story , " Hotel Historia " , was retroactively connected . Because the story featured the return of a one - off companion , it was possible to compare it to the televised story , " Partners in Crime " . Summary . The Doctor arrives at a prison in space , A machine is taking the minds of others . . . Plot . Part 1 Thinktwice . An alien woman called Zed tries to wake up a sleeping Majenta Pryce . She asks her to tell her a story . Majenta starts to tell the story of how she was a thief , stops . She says she does not know who she is nor why she is in Thinktwice prison . The prisoner s are woken by Jonah Gripton ' s voice over a tannoy . While Majenta and Zed are having breakfast , a squid - like alien named Ceecee walks up and eats Zed ' s launch . Majenta challenges her and insults her size . Ceecee attacks Majenta . She is restrained and taken away by the guards . Majenta is taken to the sick bay and is examined by Doctor Smith - - The Doctor . She steals a scalpel for a weapon . Ceecee is taken to a scientist . Her head is put under a machine and she lets out an agonising scream . Later in the prison library , a blue - skinned woman walks up to a guard and grabs his baton . She kills herself with it . Majenta tells Zed not to look . At the labs a scientist says to William Flatch , another scientist , that Ceecee is brain dead . Jonah starts hearing things . The voice says Ceecee ' s mind tasted sweet . The Doctor climbs into the ventilation shafts . His sonic screwdriver is shot by little robot s . Majenta finds Jonah ' s lab . He stuns her with his baton and her memories are wiped . Part 2 Secrets of the Space Gulag . Majenta is in the machine , with the machine shouting " Mental collapse imminent . The Doctor jumps out . Mr . Flatch attacks him , but the Time Lord releases laser - spitting robot bird s . He rescues Majenta , and they escape . The fugitives go through the kitchen s and the Doctor throws an electrically charged ladle at the guards , who arrest them . They go to the TARDIS , which is on the other side of the prison . Back in the Knowsall room , Flatch tells Gripton where the prisoners have gone . Gripton isn ' t listening . He is being contacted by some telepathic aliens , who shout , " WE FEED " Suddenly , all the guards in the room have their minds absorbed . Zed , wakes to find the room empty . She wonders where Majenta is . The Doctor explains to Majenta why he came to Thinktwice . They run into a group of aliens . Flatch and Jonah Gripton , the only two survivors , see the monster descending . They tell Gripton that they want the Doctor ' s mind . Majenta recognises the aliens , who the Doctor says are brain dead . They were taken to Knowsall for a final session . Majenta becomes very angry and tells the Doctor she won ' t end up like those people . He delves into her mind , making her recall her earlier encounter with him . When she remembers that the Doctor sent her to Thinktwice , she punches him . Suddenly they are confronted by the creatures , who introduce themselves as the Memeovax . Flatch tells Gripton about the creatures , who calmly replies they are unique . Flatch opens the waste tanks , sending the Doctor , Majenta and the Memeovax flying out into space . . . Part 3 Rage against the Machine . Gripton shoots Flatch . The Memeovax tell the Doctor and Majenta that they were born in the void and will not die , unlike them . The Doctor persuades them to save Majenta and him in return for his mind . The Doctor gives them a memory of Hemingway and him drinking and the hangover from Hell . The Memeovax overload . The Doctor gives Majenta a TARDIS key , and sends her to the ship . He allows himself to be captured and taken to Gripton . He is taken by surprise by Flatch ' s replacement , Royce , who knocks him unconscious . In the library , Zed finds Majenta hiding behind a bookshelf . They are attacked by Memeovax , who come in in force . The Doctor has been put into Knowsall . He forces Gripton to tell him why he is doing all this . Gripton says he first met the Memeovax when they absorbed his annoying sister ' s mind and they have never left him since . He built Knowsall to sate their appetite . Soon more of the same machines will be all over the cosmos ! Gripton grows angry at this and switches on Knowsall . In the library , chaos reigns . Majenta wonders why nobody is fighting back . Zed tell her it is because of Knowsall . It has wiped their minds , taking the fight out of them . Majenta goes to find The Doctor . The Doctor has no problem with Knowsall , so Gripton turns it up to full power . The machine explodes . He sends all the minds back to their owners . Zed is about to be killed by a Memeovax when she gets her mind back and remembers her name is Zephyr . She kills the Memeovax threatening her . Royce knocks out Gripton out and rescues the Doctor . Flatch had been shot in the back . Majenta runs in and is grabbed by a Memeovax . The Doctor runs to help , but Majenta becomes angry and destroys all the Memeovax with something unleashed from her mind . Together they go to the TARDIS . The Doctor explains what he did and that he is worried about whatever it was that came out of Majenta ' s mind . It ' s something more powerful than he ' s ever felt before . Majenta tells him that she hasn ' t got her memory back . She has to stay with him as a patient . They go on to new adventures . . .