Hey, it's NPR's Book of the Day. I'm Andrew Limbong. My parents are getting older,

and now when my dad is forgetful, I have to question, is he just being forgetful or is something

else going on? That feeling of distrust, of not knowing. That's a feeling author

Bonnie Kistler is playing with in her new

thriller, Shell Games. It's about a 70-year-old woman who is trying to sound the alarm that a certain

someone is a killer, but she's having a hard time being believed because of her age. Kistler spoke

with MPR Scott Simon about writing ageism into a crime novel and how

she got her inspiration for this book from a dream she had. That's coming up. In the U.S.,

national security news can feel far away from daily life. Distant wars, murky conflicts,

diplomacy behind closed doors on our new show, Sources and Methods.

NPR reporters on the ground bring you stories of real people, helping you understand why

distant events matter here at home.

Listen to sources and methods on the NPR app or wherever you get your podcasts.

Kate and Charlie, what a charming story. High school sweethearts apart for 50 years, reunited by

fate in Florida, then, after their wedding, and in their honeymoon suite, Charlie has a question

for Katie. Do you remember the Tylenol murders?

What? She blinked hard. She couldn't imagine why he was bringing this up now.

In Chicago, back in the 80s, when somebody tampered with the bottles on the store shelves and put potassium cyanide capsules in with the pills, seven people died?

Oh, now she understood.

"'God, yes,' she said with a groan.

"'That's why we all have to suffer now with these damn tamper-proof caps.'

"'He had no trouble, though.

...