The producers of Brad Pitt and Angelina Jolie’s 2005 action smash Mr. & Mrs. Smith are working on a prequel to the box office blockbuster.

Regency Enterprises is developing Mr. & Mrs. Jones, which will follow a pair of “twentysomething spies set up as a fake married couple when they graduate agency training,” Vulture spilled this week.

The Jolie-Pitts fell in love on the set of the film about a pair of married assassins hired by competing agencies to kill one another. They are not expected to reprise their roles.