Not all aliens come from space. Sean S. Cunningham, creator of the "Friday the 13th" franchise, plumbs the depths of the oceans for more terror. "NYPD Blue"'s Taurean Blacque leads a Navy expedition to create a top-secret base on the ocean's floor. But something's already there, and it doesn't want them around. What is the strange creature picking off the team, and can anybody get past it to return to safety on the surface? Greg Evigan ("B.J. and the Bear") co-stars with Nancy Everhard, Miguel Ferrer, NiaPeeples and Cindy Pickett.