Classic Who S1 • Serial 3 · (2 episodes)
The Edge of Destruction
Other variations of this story: The Edge of Destruction (BBC Audio Soundtrack)
As they slowly recover from the shock of being thrown to the TARDIS floor, the Doctor, Susan, Ian and Barbara all start acting strangely. Unexplained events occur and the travellers start to turn on each other as they contemplate what is happening on the TARDIS.
2 Episodes:
A mysterious explosion has knocked the TARDIS into void. And in their confusion, the crew are turning on one another.
The TARDIS is adrift, the crew turning on each other. Only by working together can they find their way out before they are destroyed.