Heartbeat - Season 13 - Eps 18: Difficult Times
Dennis Merton is called to Ranby Hall to investigate the sudden death of racing driver Jack Maclean from a massive insulin overdose while he was under the care of Liz Merrick and Dennis's wife, Jenny. Meanwhile Vernon bumps into an old friend who offers him a gilt-edged business opportunity which leads him into serious trouble.
About Heartbeat

Title: Heartbeat
First Air Date: 1992-04-10
Last Air Date: 2010-09-05
Status: Ended
Rating: 7.125/10 (from 32 votes)
Language: EN
Seasons: 19
Total Episodes: 372
Network: ITV1
Genres: Crime, Drama, Comedy
Production Companies: Yorkshire Television
Synopsis
Set during the 1960s in the fictional North Yorkshire village of Aidensfield, this enduringly popular series interweaves crime and medical storylines.
Cast

Derek Fowlds
Oscar Blaketon

William Simons
PC Alf Ventress

Tricia Penrose
Gina Bellamy

Peter Benson
Bernie Scripps

Gwen Taylor
Peggy Armstrong

Lisa Kay
Carol Cassidy

Joseph McFadden
PC Joe Mason

Nikki Sanderson
Dawn Bellamy

David Lonsdale
David Stockwell

Steven Blakeley
PC Geoff Younger