Heartbeat - Season 14 - Eps 14: Blast from the Past
Walker is forced to confront his past when he undertakes his own unofficial investigation into a series of violent robberies around Aidensfield. Helen has to come to terms with the fact that her marriage is probably over when Matthew's mistress appears in the village, and David finds himself involved in some shady behaviour.
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