Warner Bros. is reteaming with actress and filmmaker Maggie Gyllenhaal for a new project based on Rachel Kushner’s novel *Creation Lake*. Multiple outlets report that the studio has acquired the rights to the book and is moving forward with Gyllenhaal to develop the adaptation. The reports say she is expected to take on production and directing duties as part of the agreement. The announcement follows her work on *The Bride*, which is cited as the most recent prior collaboration between Gyllenhaal and the studio. Variety also notes that the developing project was first reported by Puck, and that additional details are expected later. Across the coverage, there is no shared information on casting, release timing, or how closely the adaptation will follow the source material. The articles broadly frame the project as a studio-backed effort for Gyllenhaal to bring Kushner’s acclaimed novel to screen, with Warner Bros. positioning her not only as a performer but as a creative lead overseeing development, production, and direction.