20/20

Your new book is called Victim F. Why'd you pick that name?

When the FBI agents were writing the affidavit for the arrest of Matthew Moeller, they asked us specifically, do you want your names in it? And typically, in affidavits like that, victims remain anonymous because of the sensitive and violent nature of the crime. But we weren't anonymous, and we said, of course, yes. We can't rebuild our lives until people can see the truth. I was Victim F for female victim. Aaron was Victim M for male victim.

Although a lot of what we wrote about in the book is tragic and sad, it is actually really our love story.

He had a copy of The Catcher in the Rye.

My research broke out of the basement. It's unstable and fragile. Is that a scream? Inspired by the bestselling books. What? Goosebumps. The Vanishing. Are you going to be okay out here. I'm not sure.

It has been described by everyone as non-fiction fiction that even John Grisham couldn't write. Goosebumps. The Vanishing.

When we come back, Matt literally wrote the book on murder. In fact, it's called The Book of Murder, A Prosecutor's Journey Through Love and Death. And we're going to talk about it when we come back.

And... it's almost like one of those crazy things, like on the train or something, like Murder on the Orient Express or something.

Here he is singing Master of the House from Les Misrables.

Princess Bride to this day is so many people's favorite film of all time I read this book 14 years ago

when I was 26 I read it and I just flipped out I mean it was one of those experiences where somebody is writing just for you where they're like in your mind and you're reading every page and it's like boy this person knows exactly how I think

Princess Bride like imagine trying to pitch that well it's a comic fantasy it's got Andre the Giant in it it's got Wallace Shawn in it you know Robin Wright's in it too right and Carrie Elwes you know at the height of his Carrie Elwesness Death cannot stop true love all it can do is delay it for a while how can it possibly work how can it possibly work inconceivable

Percy Jackson and the Olympians. New season two episode premiere December 10th on Disney Plus and Hulu. Rated TV PGV.

Roberta Laundrie would later say in an affidavit the letter was a reference to a book she had given him called Burn After Writing and it was intended as a way to bond with her son.

Five years after her death, he publishes a book about Stratton.

I think The Killing of the Unicorn was a way for him to sort out what had happened and look at it almost like a murder mystery.

How did this event happen?

He went after Hugh Hefner with both barrels.

Dorothy, when she got to Hollywood, found herself maneuvered by Hefner into a sexual situation that she found very shocking and in fact it traumatized her.

A woman was sitting about maybe 35 feet away. She was sitting there just quietly reading a book.

It was red in color and I believe it was a hard cover.

And they were in order except for one perfect space where the book was taken out.

This same description we got from the witnesses of her reading a red book.

And one book is missing out of this collection so it has to be the book that they were talking about.

And one of his favorite authors wrote a book called For Whom The Bell Tolls.

The man on the book cover had a square jaw and a come-hither stare.

They find a bank statement that they read and it says purchase on her debit card, Ray Rowling's Arms

And that's when they find out about the book how to make a disposable silencer and the fact that you're at a volume one and volume two

Your book is called A Serial Killer's Daughter. Is that how you see yourself?

I wrote my dad in the summer of 2007 because I wanted to let him know I was pregnant. ... I do because in 2012 I was able to forgive my father.

And basically she talked about, I will never get married. I will never have children. I will never have the life that you took from me, essentially. And, you know, the only sort of inspiring part about it is that it was Beth's bravery, Jane Doe, number one, that helped keep investigators on this end. It was Sarah who kept crusading for her daughter. And it was Vince who just would not give up.

There was a mathematics book that she had been teaching herself.

And I was reading that book and it was bringing to tears if you could tell she was lonely.