Carla Gugino Joins HBO's 'Entourage'

[Brian Damage]

HBO is adding a new member to its "Entourage" in the form of "Threshold" and "Sin City" star Carla Gugino.

The actress is playing Vince's (Adrian Grenier) new agent, Amanda, in the series, which resumes Sunday, April 8 (along with "The Sopranos"). The action picks up a while after the show's most recent episode, which saw Vince fire his long-time agent Ari (Jeremy Piven) after Ari's hubris cost Vince a shot at one of his dream roles: a biopic about Joey Ramone.

The new episodes resume with Turtle (Jerry Ferrara) planning a birthday party for Vince and Amanda pushing Vince and his best friend/manager, Eric (Kevin Connolly), to sign on to a high-profile period film.

Ari, meanwhile, is still working to build his agency and reaches out to Eric and Vince to patch over the holes in their personal relationship.

Gugino recently appeared in "Night at the Museum" and has several other film projects on the way: "The Lookout," which opens later this month, the vampire thriller "Rise" and Ridley Scott's "American Gangster."

"Entourage" will also feature the likes of Ed Burns (reprising his role from last season), Leslie Bibb ("Crossing Jordan") and Pauly Shore in the new batch of episodes.