By day Abby Russell is a dedicated nurse, someone you wouldn’t hesitate to trust your life with. But by night, her real work begins…using her smoldering sexuality she lures cheating men to their brutal deaths and exposes them for who they really are. When a younger nurse starts to suspect Abby’s actions and compromises her master plan, Abby must find a way to outsmart her long enough to bring the cheater you’d least expect to justice.

Paz de la Huerta plays a nurse who cares for patients by day, but spends her nights ‘targeting and punishing’ evil men. Kinda sounds like a female Dexter to me.
Also stars Katrina Bowden, Judd Nelson & Boris Kodjoe. Set for release some time in 2012.