Death on Tuckernuck / Francine Mathews.

"As a violent nor'easter bears down on New England over the final weekend in September, a luxury yacht grounds on the shoals surrounding a deserted barrier island off the western end of Nantucket. When the Coast Guard responds, they find two people shot in the boat's cabin, one of whom dies before reaching the hospital. Nantucket Police Detective Meredith Folger is called in to investigate--three days before her long-anticipated wedding--as the storm morphs into a Category 5 hurricane. Caretaker Dionis Mather has spent the past week evacuating Tuckernuck's last summer residents to safety from the isolated island. But as the hurricane nears, Dionis fights her way back across Madaket Harbor one last time. When she stumbles on a bloody trail leading to an empty summer house, Dionis makes a fateful decision that may cost her life. As the hurricane batters her beloved island and house full of wedding guests, Merry Folger struggles to unravel a tangle of false identities, missing guns, and a cargo of heroin that's left one man in a coma, fighting to survive. But is he a victim, or a killer? And what does Merry's police chief, a man with his own secrets to keep, have to do with the wounded figure holding Dionis Mather hostage on Tuckernuck?"--