The Doctor and her new friends have a mystery to solve when they become trapped in a hostile alien world. Guest starring Susan Lynch, Art Malik and Shaun Dooley.
Still reeling from their first encounter, can the Doctor and her new friends stay alive long enough in a hostile alien environment to solve the mystery of Desolation? And just who are Angstrom and Epzo?
Some stills from the two Series 11 trailers are also known to be from the episode, either because of the South African scenery or because of the presence of Shaun Dooley, who plays a yet unnamed character in the episode.
The Ghost Monument airs on Sunday, October 14 at 6:55 p.m. on BBC One in the UK and 8:00 p.m. on BBC America.