"C" is for corpse : a Kinsey Millhone mystery
(Book)

He was young-maybe twenty or so-and he must once have been a good-looking kid. Kinsey could see that. But now his body was covered in scars, his face half-collapsed. It saddened Kinsey and made her curious. She could see he was in a lot of pain. But for three weeks, as Kinsey'd watched him doggedly working out at the local gym, putting himself through a grueling exercise routine, he never spoke. Then one Monday morning when there was no one else in the gym, Bobby Callahan approached her. His story was hard to credit: a murderous assault by a tailgating car on a lonely rural road, a roadside smash into a canyon 400 feet below, his Porsche a bare ruin, his best friend dead. The doctors had managed to put his body back together again-sort of. His mother's money had seen to that. What they couldn't fix was his mind, couldn't restore the huge chunks of memory wiped out by the crash. Bobby knew someone had tried to kill him, but he didn't know why.