UNTOUCHABLE, by Jayne Ann Krentz

Part of the Sons of Anson Salinas paranormal series. The three sons are foster children whose parents were victims of the same deranged killer.
Winter Meadows has come to Eclipse Bay to hide from problems. Jack Lancaster is there to recoup between investigating the cold cases he's so good at. A hypnotist with extraordinary powers, Winter finds she msut support herself through other means: meditation counseling. Jack, an obsessive with a small problem of getting trapped in his dreams, goes to her for help. The attraction comes into the open when one of Winter's problems breaks into her house to kill her. Winter thinks the man is there only because he manged to track her down; Jack's convinced there's more to it. They join forces to find out the truth behind the attack The brilliant Quintin Zane, Jack's old nemesis and his mother's killer, has tracked him down, and will do anything in his considerable power to settle old scores. The chase is two-sided, however, and leads Winter and Jack on an intense chase through a labyrynth of clues to a denouement neither one of them could've foreseen.
No spoilers here. There's plenty of action, a fair amount of hot and heavy sex, and a couple of murders. Typical Krentz. I'll give it, barely, a four. it's a four in the sex department as well.

The prolific Krentz writes under two other names: Jane Castle (futuristic) romantic suspense and Amanda Quick (historical romantic suspense); she has written under a total of seven aliases, but has fined it down to three. She has over fifty New York Times Best Seller titles.).