This is a rush transcript from "On the Record," June 29, 2011. This copy may not be in its final form and may be updated.

GRETA VAN SUSTEREN, FOX NEWS HOST: Tonight: George Anthony sobbing on the witness stand. Casey Anthony's father loses it in court, defense attorney Jose Baez asking George about a conversation he had with the lead detective on the case.

(BEGIN VIDEO CLIP)

JOSE BAEZ, CASEY ANTHONY'S ATTORNEY: You told him that something had happened to Caylee and Casey was lying.

GEORGE ANTHONY, CASEY'S FATHER: Sir, definitely something happened to Caylee. She's no longer with us. And Casey was the last one that I saw with Caylee. One and one adds up to two, sir, in my mind. And no matter how you're trying to spin it, I'm upset because my granddaughter is missing. I don't know where she's at. I was told that someone had taken my granddaughter, forcibly removed her from my daughter, or my daughter dropped her off at some house.

I'm trying to put all the stories and information together, sir. Was I running on pure emotion and drive and demanding answers? That is my right as a father and a grandfather and as whatever you want to spin it. Was I upset and falling apart at the moment?

Absolutely. My family was being torn apart. And for to you say that I was doing something...

BAEZ: I'm going to object ...

GEORGE ANTHONY: ... wrong, sir, you're wrong.

BAEZ: ... witness commenting on counsel's questions.

JUDGE BELVIN PERRY: (INAUDIBLE) just listen. Next question, Mr. Baez.

BAEZ: Yes, sir. Now, on July 24th, you went in and made this statement to law enforcement that you had smelled that car and you smelled human decomposition.

GEORGE ANTHONY: Yes, sir.

BAEZ: And you were sure of it.

GEORGE ANTHONY: I'm 100 percent positive. I could smell it three feet away on the passenger's side. When I opened up that car door, yes, it smelled like decomposition, human decomposition.

You're trying to take this joy of my life away from me, sir, and you can't do it anymore.

BAEZ: Would you like to...

GEORGE ANTHONY: I have -- I'm going to answer this to you, sir. The decomposition that I smelled in the trunk of my daughter's car on July 15th, 2008, at Johnson's towing, smelled like human decomposition...

BAEZ: Would you like...

GEORGE ANTHONY: ... to me, sir. That is what it smelled like to me.

BAEZ: You, of course, would never admit to molesting your child, would you, sir.

CASEY ANTHONY PROSECUTOR: Objection. Argumentative.

JUDGE PERRY: Overruled. He can answer the question, if he can.

GEORGE ANTHONY: Sir, I never would do anything like that to my daughter.

BAEZ: My question is, you would never admit to it, would you, sir.

GEORGE ANTHONY: Sir, I would never do anything to harm my daughter in that way.

UNIDENTIFIED MALE: When you were giving the statement on July 24th, 2008, that Mr. Baez discussed with you at length, did you ever tell the police that you thought your daughter murdered your granddaughter?

GEORGE ANTHONY: I didn't believe that at that time, sir. I -- I -- no.

UNIDENTIFIED MALE: Had you held out the hope that Caylee would be found alive?

GEORGE ANTHONY: Absolutely. Every day from July 15th until the day we were told it was Caylee!

UNIDENTIFIED MALE: In January of 2009, you went -- I'll give you a moment.

JUDGE PERRY: Does the witness need a break?

JUDGE PERRY: Do you need a break Mr. Anthony?

GEORGE ANTHONY: No, sir. I need to get through this! I need to have something inside of me get through this!

I called my family -- my sisters, my mother, my father, basically, to tell them good-bye, even though I didn't say that. I just told them not to worry. I wanted to -- I needed at that time to go and be with Caylee!

BAEZ: And you expressed that in the note.

GEORGE ANTHONY: Yes, I did. Because I believe I failed her!

BAEZ: What was your purpose in purchasing this firearm?

GEORGE ANTHONY: I wanted to get answers from people that I believed were involved with my granddaughter missing.