This one-off event brings multiple Doctors battling through time to fight the unstoppable Cybermen! Can the Ninth, Tenth, Eleventh and Twelfth Doctors- each battling the Cybermen alone, on a different temporal front- undo the damage that has been wrought on the universe, before they are converted themselves? Or is this how the universe dies?
Naomi Alderman, Malorie Blackman, Holly Black, Neil Gaiman, Derek Landy, Charlie Higson, Alex Scarrow, Richelle Mead, Patrick Ness, Philip Reeve, Marcus Sedgwick, Michael Scott, Eoin Colfer