Rebecca De Mornay (born Rebecca Jane Pearch; August 29, 1959) is an American actress and producer. Her breakthrough film role came in 1983, when she played Lana in Risky Business. Her other notable film roles include Sara in Runaway Train (1985), Thelma in The Trip to Bountiful (1985), Helen McCaffrey in Backdraft (1991) and as nanny Peyton Flanders in 1992's The Hand That Rocks the Cradle.
De Mornay was born Rebecca Jane Pearch in Santa Rosa, California in 1959 (though many sources erroneously list 1961 or 1962). Her parents were Julie (Eagar) and Wally George (né George Walter Pearch), a disc jockey and later television host. Her paternal grandmother was vaudeville performer and child film actress Eugenia Clinchard.
Her parents divorced when she was two years old. She took her stepfather's surname, De Mornay, when she was five. She attended the independent Summerhill School in Leiston, Suffolk, England. She later trained as an actress in New York at the Lee Strasberg Institute.