Remember my knees were shaking, my palms were all clammy.

I mean, that was an awful day.

It was just so shocking.

I mean, who this has happened to?

My little sister.

Mickey and Charlie, sisters and inseparable

till the night Mickey's vanished on a long ride home.

This was an extraordinary circumstance.

Suddenly, Charlie was everywhere, relentless in a crusade for her sister.

Whatever path I was on before this, it's different now.

Where was she? And where would this mystery lead?

Even those closest to him didn't know that he had that secret life.

The twist would be heart-stopping. And the ending? That would be too.

She knew she was fighting for her life and she thought.

Because you're about to see that this young woman named Mickey just might help solve her own mystery.

You're proud of her?

Yeah, it's amazing. Good for Mickey.

I'm Lester Holt and this is Date Line.

Josh Mankowitz has our story.

Southern Louisiana, laced with mysterious bios and twisting waterways.

Where surprises lurk around every band, a place that can be as dangerous as it is majestic.

It's where all the currents of our story cross.

...