Set-up and on the run for his life, Inspector Sam Blackstone must uncover the truth before he is convicted for murder.

December, 1916. A German traitor wants 25,000 in exchange for intelligence on U-boat locations, and 'Max' has specifically asked for Inspector Sam Blackstone to be the one to deliver the money - alone. Blackstone and his sergeant, Archie Patterson, are certain there's more to it than that, but that is little comfort when, as suspected, it all goes wrong, and Blackstone finds himself on the run from his own colleagues, with Patterson languishing in a cell.

A chance meeting with a Russian former colleague seems to provide a lifeline, but his help comes at a cost ...

Praise for Sally Spencer and the Blackstone series:

"A gripping page-turner that will appeal to a wide range of fans" - Booklist Starred Review of Blackstone and the Endgame

"Rich atmospherics that will appeal to fans of Charles Todd's Rutledge novels" - Publishers Weekly on Blackstone and the Great War