Motive: Favor
Having no children of his own, Heinrich has come to view his nurse, Erika Reinhardt, as the daughter he never had. As a result, he is very loyal to and protective of her. She told the General that Martin Scardale was harassing her and her family. According to her, this was due to his disapproval of the use of new technology at the hospital where she works. Heinrich killed Scardale as a favor to her.
Concealed Evidence: Front Bumper
While Martin was visiting Frankfurt, Heinrich learned where he would be one night and drove to the location in his BMW. He followed Martin into a deserted alley and ran him over. After washing the blood off his car, Heinrich “accidentally” rear-ended a car on the road the next day. Neither he nor the driver of the other car was hurt, but enough damage was done to the front bumper that no one ever noticed the damage that had already been done when he hit Martin.
Alibi: Sick in Bed
The General is frequently ill. The night of the murder, he began to feign an especially bad illness in the evening. When everyone else had gone to bed, they believed he was too ill to get up and that he was possibly dying. He “recovered” late in the morning after the murder.
Frame Up: Political Extremists
Heinrich has no love for the Nazis. He mounted a Nazi eagle on the front of his car prior to the murder. This left tell-tale damage on Martin’s body. Since the Nazi authorities welcomed Martin’s death and did not want to risk seeing one of their own investigated, they covered up the murder and chalked up the death to “negligence.”