"Return of the Living Dead: Necropolis", the fourth film in the series, was filmed in Romania and Ukraine. The film stars Peter Coyote and Aimee Lynn Chadwick. The plot revolves around a group of teenagers attempting to rescue their friend from an evil corporation. In doing so, they wind up releasing a horde of bloodthirsty zombies. An edited version of the film aired on the SciFi Channel on October 15, 2005. The R-rated version of the film was released on DVD on April 18, 2006. The film was originally advertised as "Return of the Living Dead 4: Necropolis" but once it was finally released, the number 4 was removed from the title. Both "Necropolis" (4) and "Rave" (5) are criticized for straying from the series' rules.