You don't have to be Sherlock Holmes to figure out who the nut job is in "The Nanny". This is Bette Davis in post "Baby Jane/Sweet Charlotte" mode. She's nanny to disturbed little Joey, (an excellent William Dix), who may or may not have drowned his little sister in the bathtub. Joey is a sulky little sod given to rather extreme practical jokes, (little pretending to hang himself), but one look at Mary Poppins Davis and you might be inclined to run a mile. That fine and underrated director Seth Holt directed his excellent psychological chiller well adapted by producer Jimmy Sangster from Evelyn Piper's novel. Davis is superb but so too are Wendy Craig and Jill Bennett as Dix's mother and aunt. It has now built up something of a cult reputation.