When ex-cop Matt Scudder thought back on the summer of '75, two faces emerged from behind the smoky haze of a half dozen boozy saloons that made up his beat-Skip Devoe and Tommy Tillary-two bar flies he wouldn't have given a second thought to in the bright light of day. Yet they and their troubles were the reason that moved him a little farther out of the bleary-eyed mess that had become his life.