Just one look at Coben's latest stand-alone thriller (after No Second Chance) highlights the author's customary strengths (swift pacing, strong lead characters) but also his weaknesses, including limited originality and, in this case, a plot so complicated that many final pages are devoted to sorting it out. The premise is simple enough: suburban housewife Grace Lawson collects some pictures at the local Photomat; inexplicably, one is an old print depicting her husband, Jack, with other college students; when Grace shows the photo to Jack, he drives away-and disappears...