Tajemnica twierdzy szyfrĂłw

It's 1945, last two months of World War II. The American and Russian intelligence services are desperately looking for the secret 'Apparatus'- a device which helps Germans to decipher Soviet telegrams. Functioning of this machine is associated with one of the biggest secrets of World War II - construction of the atom bomb in the underground laboratories of Lower Silesia complex "Riese".