This is the Hidden Killers podcast with Tony Bruske and continuing coverage of the case against Brian Koberger.

We've all heard this saying you really never know someone.

But what happens when even the people who are trained to know miss it?

How can it be looking if you don't know what to be looking for or don't know the extent of what

the problem actually is?

Brian Coburger was in some shadowy figure lurking on the fringes of society.

He was a criminology PhD student studying under experts, publishing academic research,

walking the halls of academia. And yet underneath the glasses and the GPA was something far more

sinister, a ticking time bomb, wearing a backpack, and taking notes in class.

And the most jarring part, the people closest to him, professors, peers,

even one of the leading experts in serial killer psychology,

never saw it coming.

You can't really blame them.

Today we're pulling back the curtain on that chilling disconnect.

Because now that Koeberger has pled guilty to the horrific murders of four students in Idaho,

no more speculation, no more courtroom chess match.

We are left to ask the harder questions what exactly was going on in his head?

And why did anyone, or why did not anyone, see it before it exploded?

Retired FBI special agents, Jennifer Coffin-Daffer, joins me for a brutally honest breakdown.

And we're not just talking about Coboberger's behavior in court or the cold

precision of the crime. We're digging deeper into his past, into his isolation, and into the

growing, disturbing trend of psychologically fractured young men who don't know how to connect.

...