A psychotic killer gets in the good graces of his aging invalid employer, and worms his way into the affection of her beautiful daughter, with unpleasant results for all.

Danny is a working-class psychopath who moves in with a wealthy widow to redecorate her house. He plays "games" with her while sleeping with her daughter and maid.—alfiehitchie

Elderly invalid Mrs. Bramson lives in a house in the English countryside. Her adult daughter, Olivia, who is in an unsatisfying marriage, acts as her live-in caregiver. When her housekeeper, Dora, brings Danny, her fiancé, by the house for an "inspection", Mrs. Bramson immediately falls under the spell of the gregarious young man and hires him to be her live-in Jack-of-all-trades. First and foremost, he acts as her playmate. In addition, Olivia has a love-hate fascination with this new man who has entered the household. However, none of the three women know Danny's secret.—Huggo