A wife, her two-timing husband and a flirting neighbor are unpredictable competitors in a warped game that turns into a life-or-death affair.
| Actor | Role |
|---|---|
 Rebecca De MornayRuth Draper | Ruth Draper |
 Michael RookerMatt Draper / Dr. Matthew Swan | Matt Draper / Dr. Matthew Swan |
 Mark RolstonTom Bernard | Tom Bernard |
 Lisa ZaneAriana Harpwood | Ariana Harpwood |
 Shareen MitchellBetty Bernard | Betty Bernard |
| LLauren SummersCosette Swan | Cosette Swan |
 Adele YoshiokaLab Assistant | Lab Assistant |
 Ari BarakDr. Malik | Dr. Malik |
 Diane RobinReal Estate Agent | Real Estate Agent |
 Peter DobsonDelivery Guy | Delivery Guy |
 Dale DyeVernon Harpwood | Vernon Harpwood |
 Keli DanielsSocialite | Socialite |
| MMichael GuerinRik (as Michael D. Guerin) | Rik (as Michael D. Guerin) |
| MMelissa HolbrookShelly (as Melissa Senkowski) | Shelly (as Melissa Senkowski) |
| PPatrick O'NealBrad | Brad |
 Phil HawnParty Guest (uncredited) | Party Guest (uncredited) |