Rebecca De Mornay as Ruth Draper

Michael Rooker as Matt Draper / Dr. Matthew Swan

Mark Rolston as Tom Bernard

Lisa Zane as Ariana Harpwood

Shareen Mitchell as Betty Bernard

Lauren Summers as Cosette Swan

Adele Yoshioka as Lab Assistant

Ari Barak as Dr. Malik

Diane Robin as Real Estate Agent

Peter Dobson as Delivery Guy

Dale Dye as Vernon Harpwood

Keli Daniels as Socialite

Michael Guerin as Rik (as Michael D. Guerin)

Melissa Holbrook as Shelly (as Melissa Senkowski)

Patrick O'Neal as Brad

Phil Hawn as Party Guest (uncredited)