“Clown Kill” (*1/2 out of four) was a junky horror thriller that only succeeds in killing time about a staff (Roy Basnett, Jessica Cunningham, Stephen Greenhalgh and others) locked in an office building with a sadistic clown on the loose at whom no one will be laughing. Barnum and Bailey Circus (and also “Killer Klowns From Outer Space”) had far more entertaining clowns; cheap-looking photography and some terrible dialogue provide the only scare factors here. Even at barely 80 minutes, there is still hardly enough thrills or story to sustain a feature-length movie.