EXCLUSIVE: Kim Dickens has been cast in a lead role alongside Dennis Quaid and Zac Efron in Killer FilmsHeartland, which revolves around a traditional father (Quaid) who wishes for his race-car driver son (Efron) to take over the family-run seed business in Iowa, a tale that includes racing and illegal goings-on. Dickens will play the mother, Irene. Pam Koffler and Christine Vachon are producing for Killer Films. Dickens, who is a series regular on HBO’s drama series Treme and next appears on the big screen in Paramount’s Footloose, is repped by Gersh.