Spring, 1943. The war is turning against Germany, but Hitler isn't giving up. In a secret bunker deep in occupied France, scientists are hard at work on Hitler'

Hitler is working on his greatest weapon, and if the Henderson boys want to stop the Fuehrer they will have to undergo advanced sniper training, track down secr

With a mission pending in France, fourteen year-old Marc Kilgour, a secret agent, attempts to escape the German prison deep inside the enemy's territory.

Summer, 1944. As Allied soldiers prepare to land in France, Marc and his friends must destroy a battalion of German tanks that could halt the invasion in its tr

Henderson's boys, part of a secret army of intelligence agents, have to parachute into enemy territory, travel cross-country, and outsmart a bunch of adults in