Once you get established, it's pretty much a law of Hollywood stardom that you start producing, as it gives you more control over projects and often a better payday. Now it's Anne Hathaway's turn to turn producer as she's just closed a deal to star in and produce Puzzler for Paramount Pictures, according to THR.
Karl Gajdusek (Trespass, Horizons) will write the script, which is described as a female-driven thriller in the same vein as Three Days of the Condor. That's not a lot to go on, but Three Days is about a man who comes back from lunch to find all his CIA co-workers have been assassinated, and quickly realises he's next unless he can figure out what's going on. So that should give you an idea of the territory we're in.
The project marks Anne Hathaway's debut as a producer. It isn't known when the movie might go into production, but it won't be until after Hathaway completes work on Les Miserables.