999: Killer On The Line - Season 2 - Eps 5: Trigg
The unexpected death of Caroline Devlin on the 26th March 2006 was met with an outpouring of grief from her four children and her boyfriend Robert Trigg. The post mortem whilst inconclusive suspected the cause of death as a brain aneurysm. Five years later, police received a 999 call from Robert Trigg reporting yet another unexplained death, his new girlfriend Susan Nicholson.
About 999: Killer On The Line

Title: 999: Killer On The Line
First Air Date: 2016-04-18
Last Air Date: 2018-08-27
Status: Ended
Rating: 8/10 (from 1 votes)
Language: EN
Seasons: 2
Total Episodes: 16
Network: Crime + Investigation
Genres: Crime, Documentary
Production Companies: Unknown
Synopsis
This series looks at murders that were callously planned and premeditated, with the emergency calls originating from the killer themselves.