Season 9, Episode 12 "Hell Bent" - Reviewed by 2GuysTalking Doctor Who - The Doctor claims his planet, Gallifrey, and removes the unwanted elements. Next he finds the Hybrid as he travels to the end of time. In return for saving time and space from utter disaster, the Doctor is forced to forget, and all he has is a song. A song played in the time between two heartbeats. Join Kevin, Aaron and Tally as they review season 9 episode 12, Hell Bent. A brilliant finale for a doctor headed home.