 Arnold Burton hires a very attractive nurse, Miss Greco, to care for his bedridden and demanding wife, Elizabeth. Over a period of months, Arnold and Miss Greco fall in love and concoct a scheme to slowly poison Elizabeth. She catches them kissing one evening and demands that Miss Greco leave. Realizing that his wife controls all of the money, he reluctantly agrees. Arnold then arranges for his wife to interview three candidates to replaces the now departed nurse and she takes great delight in hiring the eldest, a grandmotherly type. Little does she know that she is the one who is in for the surprise.