For much of the conflict, Frankenstein concealed his identity by taking refuge in unlikely places, including an opera house, an abandoned vehicle, and even a converted subway station. In a notable incident, he evaded detection when approached by a military policeman, who was more interested in tracking down military deserters than apprehending Jews. Frankenstein recounted this harrowing experience years later to the Jewish Museum Berlin, showcasing the unpredictable nature of survival during such perilous times.

According to historian Richard N. Lutjens Jr., the average U-boat had to change locations a dozen times during the war due to constant air raids and the threat of discovery, making survival a continual challenge. Frankenstein's story is a testament to resilience in the face of unimaginable horror, leaving behind a legacy of courage and hope.