Donovan's Brain meets The Lawnmower Man. Bestseller horror novelist Saul (Second Child, Darkness, Creature, etc.) lands on the money again with one of his best--or least offensive--tales of psychological suspense. What's more, he's tuned in with Stephen King's current smash movie The Lawnmower Man, with a plot that turns in part on the novelty of computerized Virtual Reality games. Even more, his ending is ``virtually'' identical with the film's. Readers with long memories will recall Curt Siodmak's once vastly well-known, thrice-filmed story Donovan's Brain, about a scientist dominated by a dead industrialist's brain that he keeps alive in his lab. In Saul's story, a gothicky California genius academy for gifted kids is having trouble with suicide-prone students, and the deaths are piling up. Ten-year-old Josh MacCallum's best friend at the academy is Amy Carlson, though he's also buddies with the Aldritch twins, Jeff and Adam, who try to suck him into their Virtual Reality game. Then Adam kills himself, throwing himself in front of a train at night. But did he? Well, his body is crushed. But it seems that the suicides at the academy were also the smartest students, which includes the twins and suggests that IQ chartbusters Josh and Amy are marked for death. But...really? Well, no--because the academy's president, evil Dr. George Engersol, and his warm-smiling, ice- water housekeeper Hildie Kramer have been faking the suicides after removing the victim's...well, should we tell you?...and keeping it alive and blooming in a secret lab where the ``dead'' are plugged into the world's greatest computer, a Croyden, and can operate it by tiny impulses and create...virtual...reality.... Small-scale but a grabber, despite bedrock banality.