Thriller - Season 2 - Eps 2: Once the Killing Starts
A college professor has an affair with a student and kills his wife, but then he receives blackmail letters from someone who claims to know what he did. Patrick O'Neal, Angharad Rees, Michael Kitchen, Gerald Sim, Gary Watson, Patricia Donahue, Terry Wright
About Thriller

Title: Thriller
First Air Date: 1973-04-14
Last Air Date: 1976-05-22
Status: Ended
Rating: 6.6/10 (from 11 votes)
Language: EN
Seasons: 7
Total Episodes: 44
Network: ITV1 Associated Television Yorkshire Television
Genres: Drama, Crime, Mystery
Production Companies: ITV, Associated Television (ATV), ABC, CBS
Synopsis
Thriller is a British television series, originally broadcast in the UK from 1973 to 1976. It is an anthology series: each episode has a self-contained story and its own cast. As the title suggests, each story is a thriller of some variety, from tales of the supernatural to down-to-earth whodunits.