Tesseract (comic story)

Tesseract was the third part of the story arc begun in Doctor Who (2009) #1. It was divided into two chapters: "Time Smash" and "Implosion".

Summary
While the Doctor gives his new companions, Emily Winter and Matthew Finnegan, a tour of the TARDIS, the vessel is invaded by a number of dimension-hopping aliens. The Advocate places doubt into Matthew Finnegan's mind about the Doctor's morality, while the Tef'Aree have much the same effect upon Emily Winter. Meanwhile, the proximate cause of the invasion — the breech of the TARDIS by the Acari spaceship — forces the TARDIS interior to rearrange itself. Because the Doctor is psychically linked to the TARDIS, this trauma causes the Doctor to undergo temporary mental instability and his past selves begin to bleed through. Only by disengaging from the Acari ship and quickly restoring the proper console room will the Doctor's tenth persona fully reassert itself.

When Emily finds the right console, order is restored. But the Doctor's superphone rings before they can enjoy their victory. Martha Jones calls with an urgent appeal for the Doctor to return to Earth and help UNIT solve a mysterious new problem. ..

Characters

 * The Doctor
 * Matthew Finnegan
 * Emily Winter
 * Acari soldiers
 * The Advocate
 * Gizou posing as Acari soldier
 * Tef'Aree
 * Martha Jones (cameo)

Timeline

 * Tesseract occurs soon — possibly immediately — after IDW: Fugitive. A reference to Lady Christina confirms what has already been indicated in earlier issues:  the whole of this comic series happens at some point after the events of DW: Planet of the Dead.
 * The reference to Jack's sonic blaster and its destiny with River Song indicates that River hasn't yet met the Doctor for the first time.