A Study in Treason: A Daughter of Sherlock Holmes Mystery

A continuation of USA TODAY bestselling author Leonard Goldberg's The Daughter of Sherlock Holmes, A Study in Treason is a new intriguing locked room mystery for Joanna and the Watsons to solve.

The following case has not previously been disclosed to the public due to the sensitive information on foreign affairs. All those involved were previously bound by the Official Secrets Act. With the passage of time and the onset of the Great War, these impediments have been …