Kim Philby is the best British professional spy. The only difference is that, as a leading official in the British secret service, he not only works for the British side, but also as a double agent for the Soviets. He is supported by the diplomats Burgess and McLean.

An elderly gentleman lies dead in bed. For the employees of the Cologne funeral home, this is nothing unusual. Apparently, Mr. Dressler died of tuberculosis. But then bloodstains are found on the headrest, and one of the undertakers discovers a bullet. So it was no ordinary death after all!