“Rival” (*1/2 out of four) was a paint-by-numbers gore thriller set in a small town in which a mass murderer is running around and a high-school girl (Mickey Nunes) begins to realize that someone very close to her may be the killer and she has to go down her list of friends and enemies and possible suspects. Result is such a brazen knockoff of “Scream” (right down to its opening scene and the killer’s outfit) that viewers would be forgiven for thinking this was a remake, alas without that film’s killer wit and irony. Pretty desperate.