Actress Sondra Locke will direct "Impulse," a new psychological thriller starring Theresa Russell, beginning next month at Warner Bros.

Locke, best known for her appearances in several Clint Eastwood films and her lengthy romance with Eastwood, previously directed "Ratboy" for Warner Bros."Impulse," which includes Jeff Fahey and George Dzundza, stars Russell as a narcotics cop who moonlights as an undercover member of the vice squad.