Broadcast: Sunday 30th March 2014
6:30am-7:00am AEDT (19:30 GMT) < > « »
SyFy (Australia) (adverts during broadcast)

Featuring: Tom Baker, Ian Marter, Elisabeth Sladen, David Collings, Ronald Leigh-Hunt, Jeremy Wilkin

Returned to the Space Station by the Time Ring, the Doctor and his companions discover that it is in the grip of a fatal disease which has killed most of the crew. What is the secret of the asteroid it is being used to mark? Which of the crew is the traitor who is in league with the dreaded Cybermen?
Synopsis Source: Syfy Site Listing