Marley's Cypher

Originally written and published only in the 2019 edition of the collection The Spy Who Knew Nothing.
When Charles Marley was 54 years old, he was in a bit of a funk; his marriage was ending and he was back at Langley for routine re-vetting and he was more than a little bored. That is why it would prove fun to watch how much he would get perked up at getting divorced - and catching a mole.