This is Hidden Killers Live with Tony Bruske, Stacey Cole, and Todd Michaels.

Something just hasn't been adding up with Luigi Mangiani's behavior.

He shoots a man in the back on a Manhattan sidewalk, then sits in Al-Tuna McDonald's for 40 minutes

while his face is on every screen in America.

He gives up his real identity without a fight.

He tells police about the knife that they miss that he has on him.

He never touches a backpack with a gun inside in custody.

He talks constantly about health care, about his travels, about his books.

There's a lot to break down here about Luigi Mangione.

Jennifer Coffendaff, a retired FBI special agent, is with us.

We're hearing more about his chatty-cathiness with the guards in the prison.

Some of that is starting to come to light in some of these hearings.

What's your take on that where he's allegedly, according to the guards, even brought up his

gun that he has, the 3D printed gun in silencer? They're trying to fight all this and suppress it

from getting into trial.

But what does it tell you about Luigi, the fact that he's ready to just start chatting it up

with the random guards wherever he's at the second he's caught?

Well, I think a couple of things. First of all, number one, he is, as I said, this is his first

rodeo. I don't think he really understands the breadth of the

legal system, how all of this can and will be used against him. He just doesn't seem to grasp that.

And number two, I'm not sure he thinks that there is a way out. I think it's in his lawyer's hands,

but just like when he immediately sort of came clean with his name,

...