He picked up his phone and he just hit the right swipe that when he walked into his

camper and laid the phone down it was recording and that's when he was cleaning the

blood off his hands and off his shirt.

He executed our son and the video caught him.

If it wasn't for that video, we wouldn't have had anything. I'm Scott Weinberger,

I'm Scott Weinberger,

investigative journalist and former deputy sheriff.

I'm Anaseika Nicholazzi,

former New York City homicide prosecutor and host of investigation discoveries true conviction.

And this is anatomy of murder.

One of the great joys of parenting is watching kids grow to nurture them from helpless babies to inquisitive children and eventually strong and healthy young adults.

And that also points to one of the central ironies of parenting too, that as a mom or a dad, your job is to provide your kids the tools and lessons they need

to become independent, self-sufficient humans, only to then watch them use those very tools to leave the nest and strike out on their

own.

But that deep impulse to keep them safe, that never goes away.

And it's why the loss of a child can be so particularly painful,

but the murder of a child, that's a pain no parent should ever have to endure.

The funny story about Dylan is when he was born,

he was supposed to be a girl.

Every ultrasound, all six of them said

Dylan was a girl until the day he came out.

But as it turns out, Dylan Rounds was the first son of Candice Cooley

...