24 Hours in Police Custody

On a quiet Sunday lunchtime in a Cambridgeshire suburb, a man lies bleeding to death. A major manhunt is triggered, where the strength of family blood ties is brutally exposed.

The real-life drama follows police investigations into one of the most disturbing and hard-to-prove crimes - baby-shaking cases - and examines parents' often-divided loyalties.

The first episode of a two-part special taking viewers behind the scenes of a Major Crime Unit investigation into the death of an 11-week-old baby after 11 days in intensive care. During this time, the police are watching the parents intently for fear they may have harmed the child - concerns that seem to be borne out when the scale of the child's injuries is revealed by an autopsy.

The conclusion of a two-part special taking viewers behind the scenes of a police investigation into the death of an 11-week-old baby. Both the mother and her partner are under suspicion of inflicting injuries on the child on a similar scale to those suffered in the notorious case of Baby P, but neither is yet in custody. DI Lucy Thomson of Cambridgeshire's Major Crime Unit, who leads the investigation, has decided she isn't ready to show her hand. However, when police receive a 999 call reporting a disturbance at the couple's flat they rush to the scene and the investigation takes a dramatic turn.