Cook ( Coma ; Blindsight ) lures us into his newest medical thriller easily and sustains our interest until the very end, despite lots of medispeak. Bad news: the characters are one-note players. Boston Irish 'townie' Sean Murphy blazes through Harvard and Harvard Medical School, then leaps at the chance to spend part of his internship at a Miami clinic with a 100% remission rate for a particular type of cancer. He also wants to avoid making any commitment to beautiful nurse Janet Reardon, a Boston blueblood. But he's barred from the top-security cancer research lab, and then Janet arrives to work at the clinic, too--she's 'aloof and untouchable' but not above chasing Sean, the dashing 'Black Irish' with 'Mediterranean' features. Dodging a suspicious security chief, an imperious clinic...