Motive: Preemptive Strike
Erika is a Nazi sympathizer who has made herself available for special assignments. As Martin’s anti-technology campaign gained a following in Germany, the Nazi party started to view him as a threat. Erika was sent to shut him up.
Concealed Evidence: Drugs
Martin needed surgery at Erika’s hospital. Prior to the surgery, Erika drugged the chief surgeon’s meal. The drug kicked in during the surgery, causing him to lose coordination. He inadvertently severed an artery during the surgery. Martin quickly bled out and died.
Alibi: Delivering a Meal
Erika brought the chief surgeon his lunch just before he was scheduled to perform Martin’s surgery. She commonly delivers meals to doctors in the hospital, so this didn’t arouse any suspicion.
Frame Up: Surgeon
The drug Erika used to spike the surgeon’s food was specially formulated to only affect hand-eye coordination. Since the surgeon never felt any other effects from the drug, even he believed the death had been caused by his negligence.