Sim and new Trainee DC Kezia Walker are paired together to investigate a suspected rape, where the victim has no memory of the attack itself. With little DNA evidence and no witnesses to the attack itself, Walker's only lead in the form of an aggressive beggar falls flat when he manages to provide himself with an alibi. Meanwhile, uniform tackle two less than ordinary cases. Stamp and Fletcher attempt to find a burglar using his dog, whom he left at the crime scene. Before that however, they must find a way to disarm the angry mutt. Valentine and Hardy pull an elderly drink-driver who fools Hardy with the 'little old lady' routine, until Valentine discovers a long list of previous convictions. (thetvdb.com)