While the Children Sleep (also known as The Sitter) is a 2007 American made-for-television horror film directed by Russell Mulcahy and starring Mariana Klaveno, Gail O'Grady, William R. Moses, Tristan Lake Leabu, Madison Davenport, and Stacy Haiduk. Released on the Lifetime Movie Network, its plot concerns a couple who hires a live-in nanny who inserts herself increasingly into the family routine. Then friends of the family begin to have mysterious accidents, as the nanny conspires to replace the mother through murder.

The film received generally negative reviews, with many critics saying the film was derivative of other 90s femme fatale psychological thrillers, with many especially comparing it to the similar film The Hand That Rocks the Cradle (1992). Despite this, Mariana Klaveno’s performance as psychopath Abby received praise.