This is Hidden Killers with Tony Bruske. Here now, Tony Bruske.

For more than 30 years, Sandra Costello's murder belonged to someone else.

Investigators spent years trying to pin it on John Bidderow, a convicted killer from the area who'd already been linked to two other women's deaths.

Bitterolf lived in Marionville. He had the profile. He had the proximity. And for a long time, that was enough to keep investigators circling back to him.

Even when they couldn't quite make it stick.

Meanwhile, according to prosecutors, the man whose DNA ended up on Sandra's body was building an architecture career in Manhattan, commuting from a quiet house on Long Island,

raising kids living completely undisturbed.

Sandra was 28 years old when she was found.

She had come to New York from Trinidad and Tobago, and if the prosecution's case holds,

she wasn't just another cold case.

She was the beginning.

It was the first documented beginning in this horror story that we're about to break our way through here in the next week or so. We're going to be breaking down the individual stories of all

seven of the victims of Rex Herman.

But wait, there might be more.

Yeah, there might be.

We're going to cover the seven that have been confirmed over the next five days through seven

individual pieces, seven individual monologue commentaries here where we are going to talk about who each individual

person was and how they ended up being connected to Rex Heerman because they deserve that

not just be lumped in as a number one two three four five six seven but as a name one, two, three, four, five, six, seven. But as a name, an identity, a story of the human

beings that they were. Raxirman was 30 years old back in 1993, not a middle-aged man

hiding behind a suburban facade, not a father using his family's travel schedule as cover.

Just a young architect at the start of his career, and prosecutors allege the start of something

...