The killer’s first murder occurred in the city of Köln on May 25th 1913. Kürten had been stealing throughout the spring, specializing in public bars or inns where the owners lived in an apartment above the premises. On this particular evening, he was surveying an inn in Köln. Here, he himself, takes up the story,
"I broke into a house in the Wolfstrasse — an inn owned by Klein — and went up to the first floor. I opened different doors and found nothing worth stealing; but in the bed I saw a sleeping girl of about 10, covered with a thick feather bed."
Kürten seized the girl by the neck and with both hands throttled her. The child struggled for some time before unconsciousness and Kürten then drew her head over the edge of the bed and penetrated her genitals with his fingers.
"I had a small but sharp pocket knife with me and I held the child’s head and cut her throat. I heard the blood spurt and drip on the mat beside the bed. It spurted in an arch, right over my hand. The whole thing lasted about three minutes. Then I went locked the door again and went back home to Düsseldorf."