Salute from a Dead Man — Donald MacKenzie

Leaving jail with the intention of going straight, Ritchie Duncan manages to find work as a barman. But when in the pub one evening a young, frightened-looking girl pushes a small package into his hand and then hurries away, Ritchie finds himself quickly involved in a drama of corruption and international intrigue. He emerges, many adventures later, without reward except in terms of experience.