S1, E1: Sian O'Callaghan, 22, goes missing after a Friday night out in Swindon, prompting Detective Sgt. Stephen Fulcher and his team to move fast to have any chance of finding her alive.

Starring Martin Freeman, Imelda Staunton, Siobhan Finneran
S1, E1: Sian O'Callaghan, 22, goes missing after a Friday night out in Swindon, prompting Detective Sgt. Stephen Fulcher and his team to move fast to have any chance of finding her alive.