Katz' Box by Bob Henneberger
Series: Cheshire Katz Detective Agency, Welcome to the Club.
Approx. 93,880 words.
Published on June 25, 2010.
Katz must identify an unknown operative who is taking delivery of important encryption keys from an American scientist. He is arrested for murdering a Japanese agent on a cargo container freighter.
The CIA recruits Cassandra as she and Katz solve the mystery of the Japanese agent’s murder and theft of encryption keys. Cassandra agrees to marry Katz, and the story ends with their wedding.