A man has been attacked and left lying unconscious on the floor of a crowded pub for over 30 minutes. The emergency services are eventually called but, although his condition is critical, no one is prepared to come forward and name the attacker. The next day, with their victim in hospital and the attacker still at large, detectives from Bedfordshire Police seize CCTV footage from the pub. Although they can clearly see the vicious assault, they can't easily identify who threw the punch. Cameras follow every twist and turn of the investigation as the detectives work out if they can overcome the wall of silence that they face and find the evidence to charge. This is real-life drama at its most intense. Bafta Award-nominated 24 Hours in Police Custody follows Bedfordshire Police's detective work around the clock in forensic detail as officers race against time to disentangle evidence, build a case and interview their suspects.