'Heathers' Musical Will Play Off Broadway in March A musical adaptation of the film "Heathers," the 1989 dark comedy about high school mean girls that added "what's your damage?" and other memorable lines to the teen lexicon, will have an Off Broadway commercial run this spring, the producers announced on Tuesday. The show has been developed over the last several years by the composer Laurence O'Keefe, the writer Kevin Murphy, and the production's director, Andy Fickman. A concert presentation was held at Joe's Pub in 2010, and the musical had a developmental production this fall at the Hudson Backstage Theater in Los Angeles. That run was not open to reviews from theater critics. Mr. O'Keefe was a Tony Award nominee for best score for the 2007 Broadway musical "Legally Blonde," and also wrote the score for "Bat Boy," while Mr. Murphy and Mr. Fickman collaborated on the musical "Reefer Madness," which ran Off Broadway in 2001. Mr. Fickman has also directed several films, including the Billy Crystal vehicle "Parental Guidance" last year. No casting was announced; the original movie starred Winona Ryder, Christian Slater and Shannen Doherty. "Heathers" will begin performances on March 17 at New World Stages, running through Sept. The producers, who are from the film and theater world, declined through a spokeswoman to provide the capitalization or other financial details for the show.