Lord of Enchantment — Suzanne Robinson

Clairvoyant Penelope Fairfax, self-exiled to a deserted castle on the isle of Penance, discovers a young man among the rocks on the beach, and is soon caught in a tangled web of deceit and assassination.

A SHIPWRECKED RAKE

Women had always been passing fancies to Morgan St. John, the masterful, merciless agent to the queen of England ... until he found himself lying in Penelope's bedchamber. Without bitter memories to torture him, Morgan became another man, one drawn to a changeable imp whose golden eyes and enticing voice became his anchors in a sea of emptiness.

But all too soon Morgan's identity would be revealed, and he'd find himself thrown into a raging torrent of treachery--where even love may not be enough to save him....