From IMDB:

Private detective John Duval, an ex-lieutenant commander in the Royal Navy and Naval Intelligence, finds himself the prime suspect in a police hunt for a sexual killer when three women are brutally murdered.

From Amazon Prime you can stream this 2 hour 35 minute complete film.  Another version of “Silent Hours” exists which is a series.

Follow the complicated clues interspersed with lots of sexual flash backs.   Why are serial killer stories often so intriguing?