Handpicked recommendations to other books that have a similar writing style or theme to The SIGMA Protocol

Gabriel Allon's team successfully track down the terrorists who bombed the Israeli embassy in Rome; but when they do the plot takes a stunning twist, putting their lives and those of hundreds of innocent bystanders at risk.

Set in May 1941 Dark Voyage is taut with suspense and pounding with battle scenes; it is authentic, powerful, and brilliant.

It is June 1941 and the war is not going well for England. Somehow, the Germans are anticipating the RAF's flight paths, and shooting down British bombers with impunity. Old fashioned derring-do done right.

Griffin leaves World War II behind and thrusts his readers deep into the heart of the Korean War.

Two spies play cat-and-mouse games across three countries,during World War II.