Before we begin, there's something worth noticing.

Most of us move through our lives trusting a handful of very basic signs.

We trust our senses, what we can see and touch.

We trust what answers us back.

We trust routines that repeat.

When those things are in place, we assume everything else will sort itself out.

In this story, nearly everyone relies on those assumptions,

because they are reasonable, and it's practical to do so,

and it allows life to continue.

What this story is asking is, how do you know what's true?

Does it come from inside of you as a knowing? Or do you simply accept what's been offered?

I'm Harvey Guillen, and this is Killer Stories. In the summer of 2012, Dave Krupa arrives in Omaha, Nebraska.

He hasn't come very far, just over the border from Iowa, about 20 minutes away, but in a lot of ways, he's starting over.

At the age of 34, he's single for the first time in 12 years.

He spent in most of his adulthood with his now ex-partner, Amy, the mother

of his two children. And while they're committed to co-parenting, things between Dave and Amy are

icy right now. For Dave, the loneliness sets in fast. He has a new job as the manager of an auto repair shop that keeps him busy,

but the dating scene has completely changed since the last time he was single.

Nowadays, everybody's using online dating sites, so Dave figures, what the heck?

He'll give it a try.

He hits it off with the very first woman he meets, Liz Gollier.

Like Dave, she has two kids, she's fun, energetic, and good-looking.

...