When a market trader is held at gunpoint and his van is stolen, Nick suspects Lord Ashfordly's spoiled and erratic son Rupert has something to do with it. The youngster begins using his position at Ashfordly Hall to make life difficult for the Ashfordly officers, and even Blaketon is powerless against him. Meanwhile, Kate befriends a pregnant teenage girl and soon discovers why she is so desperate to conceal the father's identity, whilst Greengrass arouses suspicion with his new boots.