Heartbeat S11E13 - The Leopard's Spots

The new sergeant, Dennis Merton, arrives at Ashfordly station under a cloud after his demotion from CID. As Shiner asks for the team's assistance in a stakeout operation, Ventress' shady past comes back to haunt him when he arrests a reformed criminal's son for driving without a licence. Meanwhile, Vernon appoints himself as manager of a naive trainee boxer after Tricia encourages an out-of-condition David to join the gym.