When the Nazi high command learns in late 1943 that Winston Churchill will be spending time at a country estate in Norfolk, it hatches an audacious scheme to kidnap the prime minister and spirit him to Germany for enforced negotiations with Hitler.

Caroline Sturdy Colls, a world leader in the forensic investigation of Nazi crime scenes, is chasing clues to an unsolved case: a concentration camp that existed on the British island of Alderney. Witnesses and survivors claimed that thousands died there, but only 389 bodies have ever been found. Under heavy restrictions imposed by the local government, which may not want its buried secrets revealed, Colls must uncover the truth using revolutionary techniques and technologies.