Tess Gerritsen: Body Double (used)

Body Double is a 2004 novel written by Tess Gerritsen, the fourth book of the Maura Isles/Jane Rizzoli series. Returning to Boston from a business trip in Paris, Maura Isles encounters delays at Charles de Gaulle Airport, and finds upon landing in Boston that the airline has lost her luggage. When she finally makes it home, she finds her house taped off as a crime scene—and is surprised to see Jane Rizzoli (now about 8-months-pregnant) and Rizzoli's partner Barry Frost there. Rizzoli does a double-take on seeing Maura, and directs her attention to a white Ford Taurus in her driveway. There, Maura finds the body of a woman who looks identical to her—and also shares the same birthday.