A doctor's wife dies after a minor fender bender.

So why do her brothers believe this was no accident?

When I pulled my brother out and I told him,

you are not going to believe what I just heard.

The startling news came from their sister's friend.

She just kept insisting, promise me you'll get a full autopsy.

The brothers kept it a secret.

We wouldn't tell our parents, we wouldn't tell my sister, Diana.

We wouldn't tell anybody.

It was information about a family member they loved.

Would they point the guilty finger?

There was no way we were going to accuse him.

I'm Lester Holt and this is Date Line.

Here's Dennis Murphy.

So I wrote that Rosie Issa was just idling away a few hours that afternoon

when she had only a few precious minutes remaining.

But we never know, do we?

It was February 2005.

She was dashing to the movies to meet her sister, Diana, at a matinee.

But the last minute, I mean I was already in the movie theater,

she had called and she said, I write I'm on my way.

She said I'm leaving now.

...