For years now Keller's had places to go and people to kill.But enough is enough. Just one more jobpaid in advanceand he's going to retire. Waiting in Des Moines for the client's go-ahead, Keller's picking out stamps for his collection at a shop in Urbandale when somebody guns down the charismatic governor of Ohio. Back at his motel, Keller sees the killer's face broadcast on TV. A face he's seen q...