His Shock Marriage in Greece by Jane Porter

A merciless groom
A not-so-convenient bride
Scarred by his dark past, Damen Alexopoulos does not let emotion dictate anything—especially his choice of wife. So when his convenient society bride is switched at the altar for her innocent younger sister, Kassiani Dukas, Damen’s adamant their marriage will remain strictly business. He’s too damaged for anything more… Yet Kassiani’s determination to know him—and the intense passion of their Greek Island honeymoon—could be this ruthless Greek’s undoing!