“Risk to life: absolute.” Injured and stranded in the wilds of a far-flung galaxy, The Doctor, Yaz, Graham and Ryan must band together with a group of strangers to survive against one of the universe’s most deadly -- and unusual -- creatures.

Guest starring Suzanne Packer, Ben Bailey Smith, Brett Goldstein and Lois Chimimba. Written by Chris Chibnall. Directed by Jennifer Perrott.