As he later said, at the age of 12, his classmates for him the so-called "dark", severely beating him and, at the same time, cutting his pantyhose into the crotch and pulling it on his head.
Taking them to the interrogation room, he threatened to report the offence to the school and parents, intimidating and then extorting consent to a meeting outside of working hours.
The acquaintances of some victims said that an unknown policeman for various reasons (most often for attempting to get a free ride) assigned the missing girls meetings to pay a fine or simply read the morals.
Trying to collect evidence, the detectives decided to take a risk - they used a girl as bait, but the killer let her go at the last moment and the operation failed.
After some time the investigators decided to interrogate Shuvalov as a witness, but before they could ask any questions, he suddenly admitted to everything, despite the fact that all the evidence was indirect.