Doctor advises him otherwise. When the Doctor turns out to be correct, Hitler goes into another rage, from which the Doctor manages to calm him. Meanwhile, Ace receives a letter intended for the Doctor asking him to meet with a Dr. Kriegslieter of the Aryan Research Bureau. Thinking this meeting might reveal information useful to the Doctor, Ace goes in his place. While the Doctor has clandestine meetings first with Goering, then with Himmler, both involving the state of Hitler's mental health, Ace walks into a trap set for the Doctor. Ace is transported somehow to a castle in Drachensburg and held in a dungeon. When the Doctor extricates himself from the political intrigue surrounding Hitler, he finds a note left by Ace. Fearing the worst, he follows her path to the Berlin office of the Aryan Research Bureau, where he finds a crystal ball that showing an image of Ace being shackled to a dungeon wall and threatened menacingly with a knife. The Doctor finds a transport device linking the offices in Berlin with the castle in Drachensberg, using the device to go after Ace. In Drachensberg, the Doctor is introduced to the mysterious Dr. Kriegslieter, a hideously misshapen man. Kriegslieter turns out to be the War Chief, a renegade Time Lord the Doctor had faced long ago (see The War Games), the deformities being a result of a botched regeneration. Once again, the War Chief was working with the War Lords to develop a superior race of soldiers from Earth's history. They had been amplifying Hitler's natural leadership abilities to manipulate World War II. They would make sure Hitler avoided his major mistakes (such as the delay at Dunkirk and the opening of the second front against the Soviet Union), and with the aid of a nuclear reactor in the basement, see to it that Nazi Germany takes over the world, and eventually, beyond. Ace would be sacrificed according to ancient mystical rites invented by the War Chief to amuse the gullible Himmler, whose SS were loyal to the War Chief. When Himmler arrives for the ceremony, the Doctor attempts to expose the War Chief as a traitor to the Reich, but to no avail. As the ritual sacrifice proceeds, the Doctor appeals to Himmler to allow him to perform the sacrifice personally, arguing that the ritual would have more meaning if he were to personally sacrifice this