When vacationers and fishermen start turning up dead along a stretch of beach-and the scenes of the tragedies are rife with radioactive residue-noted scientist Ted Stevens (Kent Taylor) is called for a consult. His investigation leads to a marine biologist (Michael Whalen) whose experiments have turned a tiny turtle into a massive, ravenous beast! Delectable drive-in fodder from the precursor to AIP also stars Cathy Downs, Phillip Pine, Helene Stanton. 80 min. Widescreen; Soundtrack: English.