It is 1783 England and Isabella Deveraux is an independent and fearless young woman who has hardened her heart to everyone, including her once close-knit family. But when a disturbing dream involving her twin brother, Charlie, leaves her shaken to the core on the eve of her nineteenth birthday, Isabella immediately resolves to do anything it takes to save him and his two English schoolmates from the clutches of the devil incarnate—even if that means reconnecting with her estranged family and placing her faith and life in the hands of an intimidating Irish mercenary.

Captain Aiden Townsend is more than willing to save the lives of three privileged schoolboys, for the right price. Jaded by his own devastating loss, Aiden has worked hard to keep his distance from the female persuasion. As he sails his ship from England to Dublin with the beautiful Lady Deveraux aboard, he formulates a plan to help her. But if his plan is to work, he must first break through the walls that surround her heart and attempt to tear down a few of his own.

Isabella's Heart continues the saga of an English family as a determined young woman attempts to rescue her twin brother from a dangerous fate, with help from a blue-eyed Irish captain.