Back to a Jurassic Park sideshow for another immensely entertaining adventure, this fashioned from the loose ends of Crichton's 1990 bestseller. Six years after the lethal rampage that closed the primordial zoo offshore Costa Rica, there are reports of strange beasts in widely separated Central American venues. Intrigued by the rumors, Richard Levine, a brilliant but arrogant paleontologist, goes in search of what he hopes will prove a lost world. Aided by state-of- the-art equipment, Levine finds a likely Costa Rican outpostbut quickly comes to grief, having disregarded the warnings of mathematician Ian Malcolm (the sequel's only holdover character). Malcolm and engineer Doc Thorne organize a rescue mission whose ranks include mechanical whiz Eddie Carr and Sarah Harding, a biologist doing fieldwork with predatory mammals in East Africa. The party of four is unexpectedly augmented by two children, Kelly Curtis, a 13-year-old "brainer," and Arby Benton, a black computer genius, age 11. Once on the coastal island, the deliverance crew soon links up with an unchastened Levine and locates the hush-hush genetics lab complex used to stock the ill- fated Jurassic Park with triceratops, tyrannosaurs, velociraptors, etc. Meanwhile, a mad amoral scientist and his own group, in pursuit of extinct creatures for biotech experiments, have also landed on the mysterious island. As it turns out, the prehistoric fauna is hostile to outsiders, and so the good guys as well as their malefic counterparts spend considerable time running through the triple-canopy jungle in justifiable terror. The far-from-dumb brutes exact a gruesomely heavy toll before the infinitely resourceful white-hat interlopers make their final breakout. Pell-mell action and hairbreadth escapes, plus periodic commentary on the uses and abuses of science: the admirable Crichton keeps the pot boiling throughout.