Olivia Munn is in talks to join the cast of Mortdecai for director David Koepp.

Johnny Depp is attached to star as Mortdecai, an art dealer who searches for a painting rumored to contain access to a secret bank account filled with Nazi gold. Gwyneth Paltrow and Ewan McGregor joined the cast last month, although no details were given for their characters. Olivia Munn's role is also being kept under wraps.

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David Koepp is directing from a screenplay by Eric Aronson (The Lone Ranger), adapted from the Kyril Bonfiglioli novel The Great Mortdecai Moustache Mystery, the fourth in his series of Mortdecai books. Johnny Depp is producing alongside Christi Dembrowski and Andrew Lazar, although it isn't known when production may begin.

Olivia Munn currently stars on the HBO series The Newsroom, and she will next be seen in Tumbledown and Beware the Night.