Under The Boardwalk

Description for UNDER THE BOARDWALK by Carly Phillips:

Ariana Costas may be a college professor in Vermont, but she's still a Jersey girl at heart--at least according to her lovable, eccentric Greek family. Then her twin sister, Zoe, disappears and her Jersey roots tug hard. Soon Ari is back home, ducking bullets and, to her chagrin, getting rescued by a hunk in a black leather jacket. Detective Quinn Donovan takes one look at the windblown beauty--and then looks again. If this lady isn't Zoe Costas, it's someone who looks exactly like her. Suddenly, Ari's in trouble deeper than the Atlantic at high tide, and Quinn is trying to protect her without spilling his own well-guarded secrets...as deja vu just might become the love affair of a lifetime.

This is #1 in Costas Sisters series.