She looked like a sweet grandmother running a humble boarding house. But Dorothea Puente was hiding a dark secret—dead bodies buried in her backyard, and government cheques cashed in their names.

Between 1982 and 1988, Puente preyed on society’s most vulnerable: elderly and disabled tenants who thought they’d found refuge at her Sacramento home. Instead, they found their killer.

In this episode, we cover the shocking story of The Grandma Serial Killer—how she manipulated the system, evaded suspicion, and ultimately got caught thanks to one man: Bert Montoya.

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