Richard Schlesinger (48 Hours Correspondent)

Was that unusual?

Yes, it is.

And Duffy said Harrington was eager to work things out.

I explained to him that Mr. Winger wanted to talk to him.

And he said, that's fine.

Give him my number and have him call me.

Mark called Roger Harrington, set up an appointment for 4.30.

But police believe there's one thing Winger didn't plan for when he lured Harrington to his house.

That note Detective Williamson found in Harrington's car.

If Mark would have told us there was a meeting and the guy went berserk in the house, this case probably would still be closed.

It would be done.

But he didn't.

When Harrington went in the house, police say not only was he unarmed.

Mr. Harrington had a coffee mug and a pack of cigarettes.

He left a far more deadly object behind.

Roger Harrington had a tire iron fashioned as a weapon in his car.

If he was going there to bludgeon someone, he had a weapon in his car.

Yet he chose a weapon from inside the house that he would have no idea was there.

What do you think happened?

I think that Roger Harrington showed up, they were seated at the table in the dining room, and he held a conversation.