In 1988, Bert Montoya was taken into a boarding house run by what everyone thought was a sweet old lady named Dorothea Puente. When Bert went missing, the social worker who kept tabs on him, filed a missing persons report. When police respond, what they discover is something so shocking that they still speak about it today.
Reference:
Worst Roommate Ever
Season 1, Episode 1: Call Me Grandma
Netflix