Ausiello Files has unleashed the first poster from Mad Men's upcoming fourth season, which will debut on Sunday, July 25 at 10 PM ET on AMC. Click on this brand new poster below, which features series star Jon Hamm in an empty office, to access our poster gallery for this new season.

<em>Mad Men</em> Season Four Poster

Mad Men stars Jon Hamm, Elisabeth Moss, Vincent Kartheiser, Christina Hendricks, January Jones, Aaron Staton, Michael Gladis and John Slattery, with Jared Harris joining the cast as a series regular for Season Four. Mad Men's fourth season will premiere on Sunday, July 25 at 10 PM ET on AMC.