The Steinhauer Conspiracy

"When a student inherits a leather briefcase containing documents detailing horrible experiments his grandfather Dr. Steinhauer was involved in during World War Two, his life drastically changed.
The appalled part-time journalist takes a sabbatical from his PhD studies, to find evidence necessary to publish the long hidden secrets. To him his grandfather was just a nice doctor, nothing of his past was ever discussed, neither did Maurice Steinhauer know that his grandfather had been a Nazi, and one of the worst.
Together with a team of handpicked Nazi scientists, the evil group succeeded in manipulating the DNA of certain selected individuals sent to them from concentration camps, aiming to create biologically enhanced sub-human beings, ideally preordained to be unscrupulous murder machines fighting Hitler's war.
But the monsters succeeded in interbreeding with German women and unless stopped, the spread of the manipulated DNA could ultimately lead to disastrous consequences for Homo Sapiens.
Together with two trusted friends, Dutch resistance fighters during the war, he embarks on a life-threatening expedition to East Germany, where in the Harz forest hidden in tunnels deep
under the mountains, the experiments took place.
The German government, regaining its position in post war Europe, considers the publicity of yet another unthinkable crime against humanity, detrimental to its carefully rebuilt reputation.
The ODESSA the powerful organization of former SS members, as well as a growing number neo-Nazi's within ultra-right groups, are combining efforts to stop Maurice from gaining access to the site, and publish his findings.
They narrowly escape with their lives, after finding proof and being confronted with the crossbreed descendants of the monsters his grandfather created.