A couple (Robert Young and Maureen O'Hara) with three young children are in need of a babysitter and put an advert in the paper for a live in person. They employ a man (Clifton Webb) who seems to be perfect and can do everything. However he is not what he seems and soon problems arise in the family. Robert Young and Maureen O'Hara are entertaining as the couple in love, but the highlight of the film is the performance of Clifton Webb. He does a goood job of playing the know it all perfect person.