Book 1

The Swiss Courier

by Tricia Goyer and Mike Yorkey

Published 1 October 2009
It is August 1944 and the Gestapo is mercilessly rounding up suspected enemies of the Third Reich. When Joseph Engel, a German physicist working on the atomic bomb, finds that he is actually a Jew, adopted by Christian parents, he must flee for his life to neutral Switzerland.

Gabi Mueller is a young Swiss-American woman working for the newly formed American Office of Strategic Services (the forerunner to the CIA) close to Nazi Germany. When she is asked to risk her life to safely "courier" Engel out of Germany, the fate of the world rests in her hands. If she can lead him to safety, she can keep the Germans from developing nuclear capabilities. But in a time of traitors and uncertainty, whom can she trust along the way?

This fast-paced, suspenseful novel takes readers along treacherous twists and turns during a fascinating--and deadly--time in history.

Book 2

Chasing Mona Lisa

by Tricia Goyer and Mike Yorkey

Published 1 January 2012
It is August 1944 and Paris is on the cusp of liberation. As the soldiers of the Third Reich flee the Allied advance, they ravage the country, stealing countless pieces of art. Reichsmarschall Hermann Goring will stop at nothing to claim the most valuable one of all, the Mona Lisa, as a post-war bargaining chip to get him to South America. Can Swiss OSS agents Gabi Mueller and Eric Hofstadler rescue DaVinci's masterpiece before it falls into German hands? With nonstop action, Chasing Mona Lisa is sure to get readers' adrenaline pumping as they join the chase to save the most famous painting in the world. From war-ravaged Paris to a posh country chateau, the race is on--and the runners are playing for keeps.