When 82-year-old Irene Silverman vanished from her New York City mansion in 1998,

investigators had no idea she was the final piece of a puzzle which had gone unsolved for more than two decades.

Her disappearance exposed the dark family legacy of two monsters who spent years conning and killing their way to the top.

This is Monsters.

Music Sandra Louise Singers was born on July 24, 1934 in Oklahoma City. She was the third of four children to her parents Mary and Prama. Her father had emigrated to the United States from East India in search of a better life, and while he achieved that dream for a while, it wasn't to last.

When Sandra was a toddler, he moved his family from his failing farm in Oklahoma to the promise of prosperity in Los Angeles.

Unfortunately, that dream quickly became a nightmare.

Prama passed away when Sandra was only three years old, leaving her mother to raise the children on her own.

With no support and no way to make ends meet, she was forced to beg for food on the streets.

When that wasn't enough, she turned to sex work, which spiraled into an alcohol addiction.

With no one caring for the children, they turned to petty crime in order to feed themselves. Life was already hard enough, but Sandra also had a mean

streak. With no comfort or guidance from her parents, she found cruel ways to entertain herself.

Her sister recalled how even when she was a toddler on

their farm in Oklahoma, Sandra would use hat pins to torture their goats and dogs. When they

moved to L.A., Sandra would light matches and hold them under her sister's fingernails. Sandra's

vicious streak also extended outside the house.

When she was ten years old, she was caught stealing cheese and turned over to the police.

The officer sent to collect her showed pity and decided not to arrest her, instead taking

her out for a meal.

According to Sandra, however, that apparent act of kindness was designed to groom her.

It was four months before she told someone what the officer was doing to her.

The adults she chose to trust were the owners of a local movie theater where Sandra often

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