One man's dark deal with the Nazis could bring the Allies to their knees...

Autumn, 1942. Rule breaker OSS Agent Conor Thorn is assigned a mission to help the Allied war effort when a key Swedish cryptographer stationed in England goes missing. Thorn is determined to find him before critical information falls into enemy hands, but when his MI6 colleague vanishes trailing the code-breaker to Stockholm, Thorn is plunged yet again into a sinister Nazi conspiracy.

Can Thorn stop prized secrets from triggering more wartime carnage?

The Ultra Betrayal is the second novel in the thrilling Conor Thorn spy series. If you like harrowing historical drama, riveting espionage, and fast-paced action, then you'll love Glenn Dyer's well-researched WW II adventure.