The Bolivian Sailor — Donald Dewey

A newly arrived Bolivian seaman is found murdered in a Manhattan roach hotel. An address book on the body lists three American contacts, one of whom is private investigator Paul Finley. The trouble is, Finley has never heard of the man or, for that matter, of anybody in Bolivia. Another trouble is that the other two people in the address book are dispatched in quick order and Finley finds himself enmeshed in an assassination plot against a Bolivian diplomat.