“The Citadel” is episode ten of season one of The Tomorrow People.
In the previous episode, “Death’s Door”, Stephen had, briefly, died so that he could stop time and find limbo, as well as his father.
Stephen believes he was successful in this, but Cara is not convinced, especially as she cannot see any memory of Stephen’s meeting with his father in limbo. John seems to be supporting him though. Which is more unusual.
Ultra is meanwhile dealing with a breakout from their containment/research facility, the Citadel, which the Tomorrow People then plan to break into.
Elizabeth Hurley makes a guest appearance as the voice of ALICE, Ultra’s artificial intelligence – a more advanced version of the Tomorrow People’s TIM.