Today Your source for all things celebrity and entertainment. Katie Holmes is on fire. In the film, Holmes' character is asking her mother ( Christine Lahti ) what specific incident triggered her mental disorder. "The doctor says something has to trigger it, so what was I doing?" When Lahti insists there "was nothing we could have done. PHOTOS: Movie Posters "Please just stop lying to me," she says, explaining, "I'm just trying to figure out who I am because I don't feel like myself any more, even when I go off the medication. RELATED VIDEOS: This content is available customized for our international audience. Would you like to view this in our US edition?