A Sea Between Them (The Wellesley/O'Brien Saga) by Jessica Clements

Tara Wellesley, a Southern belle, knew her world was going to change. The only one in her family with the second sight, she could see what would happen to those around her. What she didn't see, however, was the English Rake that befriended her twin cousins-dragging them into a deadly battle with a rival spy ring.

Sebastian Stafford, the grandson of the Duke of Dunsbury, came to the United States to resurrect the Rakes of the Crown, a spy syndicate that once supplied information for the English Crown. Now, far from England, Sebastian takes solace in Tara's love and renames his group The Rakes of Liberty. The Rakes have one mission-to keep the Union together no matter the price. That means engaging in their own battle with the Order.

But, fate has other plans. When the Order launches an attack against Sebastian's family, he races back to England to save what is left of them. With a sea between Tara and Sebastian, will the Order get the upper hand or will love be enough to conquer an old foe?