Heartbeat S13E18 - Difficult Times

Merton's police work finally has consequences for his marriage when he is forced to investigate Liz's professional competence when one of her patients, a former Formula 1 driver, dies of an insulin overdose. Meanwhile, Vernon meets his match in a charismatic wheeler-dealer, and the pair embarks on a mission to make Aidensfield sparkle with a new brand of cleaning products.