The Big Crunch, Pt. 1

Cracker

S2, E4: The Big Crunch, Pt. 1

Available on BritBox, Prime Video
Schoolgirl Joanna Barnes (Samantha Morton), a member of a religious cult, is having an affair with the married leader of the group, Kenneth Trant. When confronted about it, he and the other leaders abduct her and the police reluctantly call in Fitz to help find her.