In The Werwolf Experiment, the sequel to The Werwolf on Eagle's Nest Mountain, the fictional rise of an elite World War II guerrilla movement known as the "Werwolf" continues. On a seemingly normal Thursday afternoon, Nick, Jack, and Mike's ninth grade physics teacher announces that the trio has won scholarships to attend the International Science Fair at Happyland Amusement Park. The only thing is, they never entered the competition. At the park, mysteries pile up faster than bodies on a derailed roller coaster. The boys' chaperone, Ms. March, barely survives a hit-and-run by a driver in a vintage limousine. A horrid doctor with multiple identities and a taste for killing is stalking the boys. The reclusive owner of Happyland, a survivor of the Holocaust, is also being hunted relentlessly. Nick, Jack, and Mike soon realize that someone is looking for a long-lost serum developed and tested by the notorious Dr. Mengele and coveted by Adolf Hitler. As the boys try to help the owner of Happyland find freedom from the medical experimentation secret he's carried all his life, they begin to understand the atrocities that thousands of prisoners were subjected to by Auschwitz's infamous "Angel of Death." Dodging between the unspeakable Nazi horrors that occurred during World War II in the name of science and a current Werwolf plot that could alter the world's future, Nick, Jack, and Mike must trust that the power of sibling bonds and the strength of friendships can triumph over greed-and possibly death itself.