Suburban housewives console themselves with pills and alcohol to tolerate their spouses' infidelities in The Happy Ending. Mary Wilson (Jean Simmons) is married to Fred (John Forsythe) and she prepares for their 16th wedding-anniversary party with tranquilizers and booze. The guests are clients of Fred's, a successful tax attorney. Harry (Dick Shawn) and wife Helen (Tina Louise) are two of the guests. Helen offers herself to Fred, as Mary entertains thoughts of bedding down with the playboy Sam (Lloyd Bridges) or a young gigolo (Bobby Darin). Agnes (Nanette Fabray) is the level-headed housekeeper who wryly observes the proceedings, and Shirley Jones is on hand as one of the guests. Mary ends up in the hospital in need of a stomach pump after a half-hearted suicide attempt. After the incident, her incredulous husband shallowly suggests that she needs a hobby. All is not well in the suburban Shangri-La in this feature, that tends to sympathize with the female characters.
~ Dan Pavlides, All Movie Guide