The Duplicity trailer introduces Claire Stenwick (Roberts), ex-CIA, as she is followed by Ray Koval (Owens), ex-MI6 and quickly establishes they are renewing a romantic relationship. They both accept security positions at competing corporations while agreeing to share proprietary information between themselves in order to make $40 million dollars. However, neither Stenwick nor Koval really trusts the other.YouTube: Duplicity Trailer (Time: 2:27)

• "If anything, it comes off as more of a zippy heist film of sorts than the thriller I took it to be from the earliest synopsis on, even though corporate espionage remains the name of the game. Then again, maybe we're overdue for another Thomas Crown Affair-like outing, and between the cast and the crew, I'm pretty much sold."—CinematicalCinematical: Julia Roberts & Clive Owen Sneak and Spy in Duplicity Trailer (November 26, 2008)
• "As a pair of ex-spies and current lovers trying to scam $40 million dollars out of a pair of giant corporate conglomerates (and possibly scam each other in the process), the stars display more chemistry in the two-minute trailer than they did in all of their scenes together in Mike Nichols' adaptation of Closer. Mr. Owen, clearly taking notes from George Clooney's work in Out of Sight and the Ocean's trilogy, looks as light on his feet as we've ever seen him. And we're delighted that Ms. Roberts is back on screen in a role that seems ideal for her."—NY ObserverNY Observer: Clive and Julia Star in Heist Romp Duplicity (November 26, 2008)

• Clive Owen as Ray Koval
• Julia Roberts as Claire Stenwick
• Carrie Preston as Barbara Boffered
• Tom Wilkinson as Howard Tully
• Paul Giamatti as Dick Garsik