Loretta Devine, Ali Larter, and Jason Ritter have signed on to star in You're Not You, opposite Hilary Swank and Emmy Rossum.

The story centers on a young college student (Emmy Rossum) who gets an eye-opening experience when she takes a job caring for a woman (Hilary Swank) stricken with ALS, a.k.a Lou Gehrig's Disease. Loretta Devine will play another ALS patient who becomes friends with Hilary Swank's character, while Ali Larter will play Hilary Swank's best friend. Jason Ritter is portraying a man vying for the affections of the college student, along with another man (Julian McMahon).

Marcia Gay Harden is also starring as Emmy Rossum's mother, while Frances Fisher is set to play Hilary Swank's mom. Ernie Hudson will play the husband of Loretta Devine's character.

George C. Wolfe is directing from an adapted screenplay by Shana Feste and Jordan Roberts, based on author Michelle Wildgen's debut novel. Production begins later this week in Los Angeles.