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A listener note. This episode contains adult content and is not suitable for everyone. Please be advised.

On April 28, 1982, 61-year-old Ruth Monroe lay on her bed, confused and terrified. Her whole body was paralyzed, including her face.

Her left eye would not open and no sound came out of her mouth when she tried to speak.

Ruth's adult son, Bill, entered her room and sat down on the bed. He patted her shoulders as tears streamed down her cheeks.

He promised her everything would be okay and that she would feel better soon.

Ruth's roommate and caregiver, Dorothea, had assured him of it.

Ruth had only recently moved in with Dorothea, but they became friends a few months earlier when her husband introduced them.

The ladies were of similar age and bonded quickly. They got along so well that when Dorothea proposed that they start a catering business together,

Ruth agreed without hesitation. At Dorothea's insistence, Ruth opened a joint business account and deposited around $2,000 from her modest savings.

The business, however, quickly failed. Shortly after that, in the spring of 1982, Ruth's husband was diagnosed with terminal cancer and entered hospice care.

Dorothea suggested Ruth move in with her and they could share expenses. She accepted the invitation and moved in with Dorothea, who rented the second floor of a large Victorian home.

Ruth's four adult children were happy that their mother would not be alone.

Plus, they got along well with Dorothea, who asked them to call her grandma.

But Ruth's health declined rapidly once she moved in with Dorothea. In less than two weeks, she was completely incapacitated.

When Ruth's son Bill left that night, he was grateful that his mother had such a wonderful caring friend to look after her.

But hours later, Dorothea phone billed to report that she had called 911. Bill and his three siblings rushed to the house, but their mother was already dead.

Even before the paramedics got there, Ruth's children were stunned. Her sudden illness and death made no sense.

It would take six years before police discovered that the soft spoken, grand motherly, Dorothea Puente was actually a ruthless thief and prolific serial killer.

The third word is back for another season exclusively on Amazon Music.

The worst people to bring in three words of meaning and significance to their lives. We use that as a springboard for conversation.

At the end of the show, we ask them for a word that they'll be happy never to hear again.

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