Sixty-three-year-old Gurmail Singh was a hard-working pillar of the community running his corner shop in a quiet suburb of Huddersfield. But in February 2010, four teenagers with a violent streak entered with the intention of robbing him. Gurmail put up a fight, but the young assailants hit back harder, killing him with wine bottles from his own shelves. Detectives in the Incident Room must work tirelessly to track these ruthless killers and bring them to justice.