There's a downloadable English-subtitled trailer for Harry Cleven's Duplicity (Trouble) on the page for the movie on the website of international sales agent TF1 International. On the official website for Duplicity, there's a different downloadable trailer in French for - and three downloadable clips in French from - the movie.
Duplicity stars Benoît Magimel, Natacha Régnier, Olivier Gourmet, Hanna Novak, et al..
Michael Lasry reviewed Duplicity for ScreenAnarchy back on July 22nd.
Duplicity trailer (English subtitled; downloadable 4.3 MB WMV file)
TF1 International: Duplicity page
Duplicity trailer (in French; downloadable 4 MB SWF video)
Duplicity clip #1 (in French; downloadable 6.4 MB SWF video)
Duplicity clip #2 (in French; downloadable 2.7 MB SWF video)
Duplicity clip #3 (in French; downloadable 2 MB SWF video)
Duplicity official website (in French)
Twitch review: Duplicity