Dreaming Spies is a 2015 mystery novel by American author Laurie R. King.

Thirteenth in the Mary Russell series, the story features married detectives Mary Russell and Sherlock Holmes.

Although written thirteenth in sequence, the events in this book take place between those described in The Game and Locked Rooms.

It is 1925, and Mary Russell and Sherlock Holmes arrive home to find a stone.

A stone with a name, which they last saw in the Tokyo garden of the future emperor of Japan.