Amber Heard is in talks to star opposite Johnny Depp in The Rum Diary, an adaptation of a Hunter S. Thompson novel that Bruce Robinson is writing and directing.

According to The Hollywood Reporter, Heard is a relative newcomer who so far has been cast in supporting roles in more modest movies. Her notable roles include the title character in All the Boys Love Mandy Lane and a stint as Seth Rogen's high school-aged girlfriend in Pineapple Express.

The Rum Diary will place Heard at the front and center of a love triangle in the tale of a washed-up, hard-drinking journalist named Paul Kemp (Depp) in 1950s Puerto Rico. Heard will play Chenault, the free-spirited girlfriend of a fellow journalist who cheats on him with Kemp, trying to convince him to run away with her.

The role drew strong interest from many a leading lady (Scarlett Johansson and Keira Knightley were among those reported to have been vying for it), though some had reservations regarding the nudity the role calls for. But that didn't inhibit Heard -- in the upcoming ensemble Bret Easton Ellis adaptation The Informers, she spends all but one scene in the flesh. The Rum Diary, however, also will offer the opportunity to showcase some dramatic chops.

The role of Sanderson, the third point in the triangle, has not been cast.

The project, which Depp, Christi Dembrowski and Graham King are producing, begins March 30 in Puerto Rico.

The Rum Diary is a passion project for Depp, a friend of Thompson, who has been trying to get the adaptation off the ground since 2003.