After a man's wife is mysteriously poisoned, he discovers a diary indicating all of her previous lovers who also are potential murder suspects.

With their mother dead, Emily and Ben torment their nannies to quit as fast as their father hires them. Till a nanny named Kate shows up and slowly wins Ben over. That's bad enough, but when her father and Kate start to fall in love, Emily sets out to break them up and match him with her ballet teacher.