Wealthy Margo Wendice's husband (Laurence Harvey) plots her murder to inherit her fortune after discovering her affair, leading to a tense, failed, and improvised criminal scheme. A made-for-television remake of Alfred Hitchcock’s 1954 film.
| Actor | Role |
|---|---|
 Diane CilentoMargo Wendice | Margo Wendice |
 Laurence HarveyTony Wendice | Tony Wendice |
 Hugh O'BrianMark Halliday | Mark Halliday |
 Cyril CusackChief Insp. Hubbard | Chief Insp. Hubbard |
 Nigel DavenportLesgate | Lesgate |
 Glynn EdwardsSgt. Edwards | Sgt. Edwards |
 Garry MarshLionel | Lionel |
 Joanne DaintonBarmaid | Barmaid |
 Arthur HewlettHotel Clerk | Hotel Clerk |
 Carole Ann FordNot listed | Not listed |
| MMichael GauntDet. Sgt. Williams | Det. Sgt. Williams |