An undelivered letter dating from World War II sends a disgraced bureaucrat on a journey to discover what happened to his father and, in the process, discovers his own path to redemption.

TANGIER tells two parallel stories: one a mystery and the other a spy story, set fifty years apart and told in a series of alternating sections. In the first, we follow Christopher Chaffee, a disgraced Washington power-broker whose father, a French diplomat, died in a Vichy prison in 1944 or so he had always believed until a letter, received decades after it was posted, upends his...