The Bride Thief — Susan Spencer Paul

THE BALDWIN BROTHERS DID NOT TAKE THEIR BRIDES CONVENTIONALLY
Isabelle Gaillard had learned that the hard way when Sir Justin Baldwin had whisked her away bodily under cover of a moonless night. Now, though he'd been promised to another, she was his new-bound bride. Yet could she ever trust such a thief of hearts?
When Justin Baldwin brought Isabelle Gaillard to his keep, he thought his life settled and complete. But the heiress whom he'd rejected to follow his heart had now returned, throwing his ordered world into disarray --- and his one true love into danger!