In 2018 in Spain there were 1.3 homicides committed by men per 100,000 inhabitants, and 0.2 at the hands of women. Victoria Pascual's book takes the palm Ilse Koch, alias the vixen of Buchenwald.

She was the wife of SS Lieutenant Karl Otto Koch, commander-in-chief of the concentration camp. She believed herself owner and mistress of the people who fate sent to the camp. The most frequent among the murderers is the economic motive, which makes some sense.