Season 1

2 episodes · Oct 19, 1997 · 8.0

A five-year-old girl goes missing and the police are called to search for her. When her body is found, it becomes a murder investigation, headed by DS Michael Walker.

Season 2

2 episodes · Oct 18, 1998 · 6.0

DS Walker pursues Damon Morton, accused of brutally attacking women, but the case is complicated by false confessions and alibis.

Season 3

2 episodes · Oct 7, 1999 · 8.0

15-year-old Cassie Black goes missing on her paper round in south London. An anonymous phone call leads the police to a boathouse in Putney where they discover her blood-stained jacket and trainers. An inquiry is launched.

Season 4

2 episodes · Oct 4, 2000 · 6.0

DI Pat North is assigned to look into a 15-year-old case that may clear a man convicted of murder eight years ago.

Season 5

2 episodes · Jun 19, 2001 · 8.0

Walker investigates the discovery of a 17-year-old skeleton underneath the patio of a former bed and breakfast. His situation is worsened as he's partnered with North's ex-boyfriend.

Season 6

2 episodes · Oct 5, 2002

Back on the murder squad, North is asked to investigate when a young mother of two is abducted. The confession of a local sex offender complicates matters, as Pat looks into the possibility that the father of a young protégé of the woman may be responsible for her disappearance.

Season 7

2 episodes · Aug 30, 2003

Season 8

2 episodes · Oct 11, 2004

Season 9

2 episodes · Nov 7, 2005

Season 10

10 episodes · Jan 14, 2007

Season 11

10 episodes · Jan 16, 2008

Season 12

6 episodes · Jan 8, 2009