Shadow reaper / Christine Feehan.

Billionaire playboy Ricco Ferraro knows no other life. Being a shadow rider is in his blood--but so is a haunting desperation stemming from the secrets of his dark past. His recklessness puts not only his life at risk, but also the future of his entire family. To save them all, he must find a woman who can meet his every desire with a heat all her own. Just when Ricco has given up hope, he meets her--a mysterious woman whose shadow connects with his. She's someone looking for a safe haven from the danger that has stalked her over the last several months. In Ricco's embrace, she finds one. But the darkness in which they so often find sanctuary can also consume them.