Follow the detailed investigations of two very different police officers thrown together by a series of gruesome crimes ranging from baffling murders to terrifying abductions.

Title and credits from container. Originally produced for British television 1997-2000.

Trial & retribution (1997) ; Trial & retribution II (1998) / teleplay by Lynda La Plante, Vaughan Kinghan ; directed by Aisling Walsh -- Trial & retribution III (1999) / teleplay by Lynda La Plante ; directed by Jo Johnson -- Trial & retribution IV (2000) / teleplay by Lynda La Plante ; directed by Michael Whyte.