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When a shocking crime happens, people want to know why.

One of the most horrifying crimes in this century.

Why would someone do something like that?

We have an individual who has the uncontrollable desire to kill at times.

That could possibly push them to commit such a horrible act.

The death count started rising.

There was another body and still another and another.

Was it about power, money, revenge, impulse, obsession?

What makes people like that tip?

I'm Candace DeLong.

With the career spanning nearly five decades as a psychiatric nurse and FBI criminal

profiler, I've sat across the table from hundreds of criminals and spent countless

hours inside their minds.

In season two of Killer Psychie, we are going to go deeper into the complex psychology

and the unsettling motivations behind the most disturbing criminal figures.

You may think you know these cases, but trust me, you do not.

Many of the cases we will explore I worked on, like the serial killer Brian Dugan and

other cases that I studied at the FBI's behavioral science unit, like Dennis Raider, also known

as BTK.

He lives a double life.

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