In the final episode the race is on to find out who is going to release the flu. The gang track down Dobri Gorski, where he tells them the names…

Following the revelation that her father’s alive, Jessica sets off to find him, with hostage Milner in tow. Wilson and Leah analyse their information and discover a far darker, more…

An alien warlord sets a twisted plan in motion in order to ensure his survival on a remote Army outpost, and the Doctor may have to do something unthinkable.

The Doctor and Clara save the frightened crew from a threat in an underwater base, but the Doctor questions the haunting.