Producer Aaron Magnani is developing a movie project from Dr. Richard Baer’s “Switching Time: A Doctor’s Harrowing Story of Treating a Woman with 17 Personalities”, Variety said.

Jen Kleiner, the director of “Nina Quebrada,” is writing the script.

The book, published in 2007 by Crown, centers on a female patient Baer treated who created 17 different versions of herself — men, women, young boys, a toddler, nurturing, prim, licentious — to survive. The Chicago psychiatrist eventually learned that the patient had been a victim of sexual abuse.

“Switching Time” is described as the first story centering on multiple personality disorder to be told by the treating physician.

Magnani is also developing author CJ Cherryh’s sci-fi fantasy quartet “The Morgaine Stories,” with Peter Arneson adapting. Magnani and Arneson previously worked on indie “Iron Doors” together.

Magnani is also producing “18 Wheel Butterfly” with Evan Rachel Wood attached to star.