Dr. Martin Harris (Liam Neeson) awakens after a car accident in Berlin to discover that his wife (January Jones) suddenly doesn't recognize him and another man (Aidan Quinn) has assumed his identity. Ignored by disbelieving authorities and hunted by mysterious assassins, he finds himself alone, tired, and on the run.
Aided by an unlikely ally (Diane Kruger), Martin plunges headlong into a deadly mystery that will force him to question his sanity, his identity, and just how far he's willing to go to uncover the truth.
Academy Award® nominee Liam Neeson ("Schindler's List"), Diane Kruger ("Inglorious Basterds") and January Jones (TV's "Mad Men") star in the contemporary thriller "Unknown." The film also stars Aidan Quinn (TV's "The Book of Daniel"), Bruno Ganz ("The Reader") and Oscar® nominee Frank Langella ("Frost/Nixon").
The film was directed by Jaume Collet-Serra ("Orphan"), from a screenplay by Oliver Butcher & Steve Cornwell, based on the novel Out of My Head by Didier van Cauwelaert.
"Unknown" is produced by Joel Silver, Leonard Goldberg and Andrew Rona. Susan Downey, Steve Richards, Sarah Meyer and Peter McAleese served as executive producers, with Richard Mirisch, Adam Kuhn, Charlie Woebcken, Christoph Fisser and Henning Molfenter co-producing.
Collet-Serra's behind-the-scenes collaborators included director of photography Flavio Labiano, production designer Richard Bridgland, editor TimAlverson, and two-time Oscar®-nominated costume designer Ruth Myers ("Emma," "The Addams Family").
"Unknown" was shot entirely in Germany, using Studio Babelsberg, the oldest large-scale studio complex in the world. Studio Babelsberg is also a co-producer on the film, under an agreement with Silver's Dark Castle Entertainment. Locations also included Berlin and Leipzig.

Warner Bros. Pictures presents in association with Dark Castle Entertainment, a Panda Production. Opening nationwide on February 18, 2011, "Unknown" will be distributed by Warner Bros. Pictures, a Warner Bros. Entertainment Company.