hemingway and gellhorn

'Life Unexpected' star Kristoffer Polaha is set to romance Sarah Michelle Gellar in CBS's 'Ringer.'

According to TVLine, Polaha will play Gellar's Siobhan's lover. Here's the catch -- he's currently married to Siobhan's best friend! In the pilot, Gellar plays twin sisters, Siobhan and Bridget, both women with quite a few secrets -- and bounties! Bridget poses at Siobhan, thus romantic entanglements begin. Oh, Siobhan is also married.

Get all that?

In other casting news ...

• HBO has added an impressive list of names to its 'Hemingway & Gellhorn' TV movie. Joining Clive Owen and Nicole Kidman are Molly Parker, Parker Posey, David Strathairn, Rodrigo Santoro, Lars Ulrich, Santiago Cabrera, Saverio Guerra, Peter Coyote, Diane Baker and Tony Shalhoub. [Deadline]

• Jordana Spiro has been tapped to star in ABC's 'Lost and Found.' The former 'My Boys' star will play Jo, a New York City-based bartender/party girl whose life is changed when the son she gave up for adoption 18 years ago shows up on her doorstep. [Deadline]

• Thomas Dekker has joined The CW's 'Secret Circle.' Dekker will play Adam, the oldest member of a coven and a potential love interest for Cassie (Britt Robertson). [TVLine]

Clive Owen and Nicole Kidman will play Ernest Hemingway and Martha Gellhor, respectively, in an HBO movie produced by James Gandolfini.

'Hemingway & Gellhorn' is Gandolfini's passion project. According to Deadline, the 'Sopranos' actor was first attached to star in the film when it was originally pitched as a theatrical feature. He later brought the movie to his old home of HBO under his Attaboy Productions banner.

Filming is set to begin next year in Northern California.