DIFFERENT VICTIMS  The blonde film student. The brunette paralegal. The red-headed artist.   DIFFERENT METHODS The first victim is strangled. The second is stabbed repeatedly. And the third is pushed out of an open window.   SAME MADMAN In the city of Seattle, no single woman is safe. From afar he watches the ones he so desperately wants. Willing to do whatever it takes to prove his love. But should his latest obsession betray him, he will have no choice but to punish her. By finding new and brutal ways to teach her a lesson. And by finally loving her--to death . . .   PRAISE FOR THE NOVELS OF KEVIN O'BRIEN    "Imaginative, well written...add this book to your summer reading list." --Times Record News (Wichita Falls, Texas)   "Another fast-paced and gripping read." --The Seattle Post Intelligencer