Nancy Grace

What do you make of it, David Richards?

It would show a certain degree of premeditation that if shoe coverings were worn, and there's many different types, and you have to look at the porch guy's shoes to determine, is that possible?

The reason I care, if shoe coverings were worn, that would be an entirely new avenue of investigation to find out who bought those, who had them in the neighborhood, maybe construction workers, maybe HVAC workers.

Maybe people that were coming in and out of Mrs. Guthrie's home that didn't want to track mud into her home.

It could mean any number of things, David.

Take a look on the right side of the screen at the shoes there.

They look somewhat different than the ones he's wearing on Feb.

1.

So did he not wear shoe coverings Jan.

11 and did wear them Feb.

1?

These are some of the questions that the FBI is investigating as we go to air tonight.

If you know or think you know anything about Mrs. Guthrie's whereabouts, please dial toll-free 800-225-5324.

If you wish to remain anonymous, 520-882-7463.

There is a 1.2 plus million dollar reward for information leading to the whereabouts of Mrs. Guthrie.

A conviction, even an arrest, is not required for you to get this reward, $1.2 million.

Tonight, we remember an American hero, Sergeant Michael Schlattman, Bernalillo County Sheriff's, New Mexico, killed in the line of duty after 13 years, leaving behind a grieving fiancée,

Tara Flynn, American hero, Sergeant Michael Schlattman.

Thank you to our guest, but especially to you for being with us tonight and keeping the search for Nancy Guthrie alive.

Nancy Grace signing off for tonight, but I'll see you tomorrow night.