Previously on Anatomy of Murder.

We're trying to figure out where Tristan's at.

I'm not trying to get in trouble or anything like that.

Obviously, I'm more concerned about her safety and what she's doing

and where she could be hanging out.

My dad had FaceTime me and gave me a single nod of confirmation

that the body they had found was in fact Tristan's.

We saw her last moments walking into the cul-de-sac and then we saw

it in 2G, exiting the cul-de-sac.

Hold on.

I'm Scott Weinberger, investigative journalist and former deputy sheriff.

I'm Anna Siga-Nicolasi, former New York City homicide prosecutor

and host of investigation discoveries through conviction.

And this is Anatomy of Murder.

A quick reminder, this is the second episode in a two-part series.

If you haven't yet, go back and listen first to part one.

On the night of May 9, 2021, 14-year-old Aiden Fucci was sitting with his parents

in an interview room at the St. John's County Sheriff's Office.

Just a few hours earlier, the body of 13-year-old Tristan Bailey had been found

after an extensive search she'd been stabbed to death.

As the Bailey family reeled from the news, police were working to figure out

what had happened to Tristan and who had killed her.

...