When Worlds Collide (graphic novel)

 was a trade paperback collecting the issues five through eight of the Doctor Who (2011) comic book series. It contained the stories They Think It's All Over! and When Worlds Collide.

Publisher's summary
Join the Doctor and his companions, Amy and Rory, as they travel to the far reaches of space — a vacation planet built on a rift where multiple alternate adventures overlay each other — and the distant past — where our heroes must face Vikings to save their friend and the future of Britain!

Featured stories

 * They Think It's All Over!
 * When Worlds Collide

Credits
to be added