Series: 9

Original Air date:  October 3, 2015

Number Doctor: 12th

Companion(s): Clara Oswald

Writer(s):   Toby Whithouse

Director(s):  Daniel O’Hara

Guest Stars:
Colin McFarlane as Moran
Sophie Stone as Cass
Zaqi Ismail as Lunn
Morven Christie as O’Donnell
Arsher Ali as Bennett
Steven Robertson as Pritchard
Paul Kaye as Prentis

Synopsis: Under a lake a gleaming black spaceship is recovered but there is nothing inside. When the base crew start dying, they discover that ghosts are real. The Doctor and Clara arrive to find the base under siege and the Doctor discovers that this is more than a ghost story.

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