Brad Pitt & Angelina Jolie are Mr. and Mrs. Smith

Brad Pitt and Angelina Jolie have signed to star in the thriller Mr. and Mrs. Smith. Fox-based producer Regency Enterprises and the actors are trying to work out dates to get the project going by year's end.

Close to two weeks ago, the film looked to be unraveling with Pitt nearing an exit after a leading lady couldn't be found in the absence of his original co-star, Nicole Kidman, who had to drop out because of scheduling conflicts.

The Simon Kinberg-penned project, which Doug Liman (The Bourne Identity) is attached to direct centers on a bored married couple who discover that they are enemy assassins hired to kill each other.