Ostensibly a quickie b-flick targeted at matinée audiences, "Tarantula" certainly isn't High Art but it does take a refreshingly serious tack on its story. Mad scientist in small desert town experiments with growth serum, accidentally unleashing one humongous spider on the terrified locals. Very nice atmosphere, decent special effects, not-bad performances. John Agar is the stalwart hero, and of course he's coupled with a pretty girl prone to screaming (Mara Corday as Stephanie, whom Agar affectionately calls 'Steve'). Probably more fun today for nostalgic adults than modern preteens, and certainly not as gripping as "Them!", but still a well-enough produced creep-show. Look fast for Clint Eastwood in an uncredited bit. ** from ****