Answer: Lise Johnson died in a car crash. The incident involved the Nazi military force.
Step-by-step explanation:
Lise Johnson was Annemarie Johansen's older sister. The Johansen family participated actively in the rescue of many Danish Jews during the Second World War in Copenhague. Nazi military officers killed her due to her participation in the Danish Resistance movement during the first years of the war. Annemarie's best friend, Ellen Rosen, takes Lise's identity to avoid her possible relocation.