Zac Efron is set to show his rebellious side, as he signs on to star in thriller Narc.
The former High School Musical star is in talks to play a university student who turns police informant after he is busted for cocaine, reported Deadline.
Based on a true life story and described as a "college Donnie Brasco", he continues to balance his life as a fraternity president and lacrosse team captain, while leading a double life by helping the cops take down criminals.
Zac's manager and producing partner Jason Barrett will be an executive producer on the film with Doug Banker.
The 25-year-old actor - who recently starred in The Paperboy alongside Nicole Kidman and Matthew McConaughey - will next be seen in JFK drama Parkland and romantic comedy Are We Officially Dating? with Imogen Poots.
It's the latest role to shake up Zac's good-guy image, following his part in The Paperboy and the forthcoming Autobahn, in which he plays an American backpacker who gets involved with a ring of drug smugglers as a pick-up driver.