Bisexual Peter Kurten had killed many times before, both those he had raped and those he had not. There are two possibilities why he left so many alive and able to identify him.
Firstly, he was as much a sadist as a serial killer and enjoyed the attack as much as the execution.
One victim was stabbed 24 times but survived. Secondly, he liked reading the survivors accounts of his attacks in the newspapers.
Maria Budlick was one such survivor but Kurten saw her returning with police and fled...