No Night is Too Long — Barbara Vine

Handsome, charming, faithless Tim Cornish has murdered his long-time older lover. Or has he? The beautiful stranger who enticed Tim into an intensely, erotic affair has vanished into thin air. Or has she? Tim must hunt the answers in a labyrinth of lust and lies where embers of desire glow with heartless horror and love reaches out in an infernal embrace from beyond the grave.