***SPOILERS*** Secretly driving up to the Sea Spray Motel to have an evening of hot and heavy action married couple, but not to each other, Janet Cord & George Whtney, Gena Rowlands & Myron Healey, get a lot more action they they ever expected.
While freshening himself up in the bathroom George suddenly drops dead from a fatal heart-attack leaving his intended and a bit reluctant sex partner Janet holding the bag in being the last person to see George alive. It's when the news gets back to George's wife Harriet, Ida Lupinio, that her cheating husband was found dead in a motel room that he was to spend the afternoon with another woman that she blows a fuses! What Harriet didn't know was that the other woman was her best friend Janet Cord!
Determined to find out who the other woman is Harriet hires private investigator Ellis, Phillip Pine, to track her down. Ellis does in fact find out from motel manager Homer Fargis, Jack Weston,that George was indeed with another woman whom he can identify her if he ever saw her again. It's at George's funeral that Homer was was urged by Ellis to attend that he spots the other woman, Janet Cord, but keeps that information from both Ellis and Harriet. He planned to blackmail Janet in him keeping his mouth shut and her paying him off with $2,000.00 up front and $150.00 a month until further notice! And that further notice can be until Homer feels that he's got enough money to keep him fit & happy which may well be the rest of his life.
As we soon find out it was Janet's doctor husband David Cord, Leslie Nielsen, who drove her to do what she did in trying to have an affair with her best friend's husband Geoprge Cord. By working late hours at the hospital ER and not spending any time with her Dr. Cord left Janet starved for both love and attention which the very accommodating George Whitney was more then willing to give her. Of course George in neglected his serious heart condition as well as his medication for it ended up doing himself him in before he could even spring into action.
***SPOILERS*** In the end everything turned out all right for Janet in the blackmailing Homer getting busted by the police not for blackmail but harboring a number of fugitives, his partners in crime, from the law and Harriet forgiving her in realizing that Janet's husband was as guilty as her own in neglecting her and forcing Janet into George's arms. But best of all it's David who realized what a heel he was in not spending any time with Janet who after finding out that she was about to, but never had, have an affair with another man that he turned over a new leaf and found time for her. That despite his very long hours at the hospital emergency room which, with his marriage with Janet now in jeopardy, he could now do well without.