Vigil Harbor / Julia Glass.

"A decade in the future, in the historic town of Vigil Harbor, there's been a rash of divorces among the yacht-club set; a marine biologist despairs at the state of the world; a spurned wife is bent on revenge; and the renowned architect Austin Kepner pursues a passion for building homes to withstand the escalating fury of coastal storms...When two outsiders come to town--one a woman determined to solve the disappearance of a long-lost lover who links her to Austin, the other a man with subversive charms--the fates of Vigil Harbor's residents become intertwined on one remarkable day and a long-held secret involving a selkie comes to light"-- Provided by publisher.