Episode 1

Sian O'Callaghan goes missing after a Friday night out in Swindon Old Town. As the family desperately waits for news, the police search for any clues to where she could be.

Series Cast

Martin FreemanSteve Fulcher

Siobhan FinneranElaine Pickford

Imelda StauntonKaren Edwards

Peter WightCharlie Edwards

Derek RiddellPete

Owain ArthurDI Sean Memory

Jake DaviesLiam O'Callaghan

Jessica D'ArcyLora O'Callaghan