This Dangerous Magic — Jayel Wylie

After twelve years Tarquin FitzBruel, the most fearsome warrior in all of England, returns to Brinlaw Castle to keep a promise to his half-sister, Nan. Yet he vows to leave quickly before the demon that lurks within him can destroy the only people he truly loves, including the willful Malinda -- the spoiled beauty who haunts his dreams.

Malinda Brinlaw does not take well to being denied something she wants. After all, she is a sorceress. So when she meets Tarquin FitzBruel, she ignores her family's warnings and uses her faerie magic to cast a love spell on the unsuspecting warrior. Their clash of wills turns into a white-hot passion so intense that a connection is forged between them forever. But the darkness that plagues Tarquin's soul threatens to tear the destined lovers apart...unless the tortured warrior can make the fearful choice that will save them.