Heartbeat (1992)

S11E13 The Leopard's Spots

Sgt. Merton, recently demoted from the CID, arrives at the police station ready to embrace his new position as Sergeant. When Ventress brings in a disqualified driver, Alf faces a threat—if he pushes further, the driver will expose his history. Encouraged by Oscar, Alf decides to be honest, and Merton shows compassion. Eventually, the driver is taken into custody for a drug-related offense. Meanwhile, David tries to improve his fitness at a gym, but his efforts encounter several hurdles.