Could a murder at Bletchley Park cost Britain the war?

November, 1939. The British government has assembled a small group of intellectuals at an estate north of London as part of a top-secret codebreaking effort. When one of the young female linguists is murdered, Britain’s counterintelligence spymaster tasks Olivia Redmond to take her place and investigate the motive.

Did the woman uncover a mole? Could Britain’s program to break German Enigma cyphers be compromised?

Olivia is sent in alone, without clues or suspects, to find the killer. If she fails, it could mean the destruction of Britain. Will she outwit the culprit or become the next victim?

Deadly Cypher will be on sale until August 30, 2021 when it will be sold at full price.