Tracy Letts. Actor: Lady Bird. Tracy Letts is the son of actor Dennis Letts and best-selling author Billie Letts, of "Where The Heart Is" and "The Honk And Holler Opening Soon" fame. Tracy is also the author of the stage play "Killer Joe", which ran off-Broadway in 1998 for nine months and starred Scott Glenn, Amanda Plummer, Michael Shannon, Sarah Paulson and Marc Nelson.