20th Anniversary of the 1st appearance of the Slitheen! From DAN WATTERS, the acclaimed writer of DOCTOR WHO: EVERYONE MUST GO! Experience a Doctor Who adventure like no other as The Doctor, Belinda, and an unlikely team of allies infiltrate a prison holding monsters and villains from across the cosmos. With new friends and old foes, and some old foes who might just be new friends, its an adventure that will take you across the Whoniverse… and beyond!