Inside Apartment 357, loud rock music blasted through the walls day and night, drowning out the screams coming from inside.

Behind that door lived Alexander Spesivtsev, one of Russia’s most horrifying killers—and he wasn’t acting alone.

Investigators say his own mother helped lure victims into the apartment and cover up the nightmare happening inside.

The unassuming, innocent victims walked in believing they were safe… but many never came back out.

This is the terrifying true story behind The Cannibal in Apt 357.