Unidentified woman #15
(Book)

"During one of the first heavy snows of the winter, on the interstate outside the Twin Cities, Rushmore McKenzie is trapped behind an erratically driven truck. Then a figure appears on the truck bed and a body is rolled out onto the road, right in front of McKenzie's car. McKenzie avoids hitting the body, a bound woman who is barely alive, but his sudden braking in the middle of the highway starts a chain of accidents, resulting in a thirty-seven-car pile-up. By the time the police arrive, and the EMTs and ambulances have taken care of the immediate injuries, the truck is long gone. The injured woman awakens with no memories--not of the accident, not of anything--and is now referred to by the police as Unidentified Woman #15. With few leads, the detective in charge, McKenzie's former partner and old friend Bobby Dunston, turns to McKenzie for a favor. Not that a favor is required, because when you dump a person in front of McKenzie's moving car, he tends to take that personally." -- From dust jacket.