Dec. 5, 2008 -- Police have released new videos of Casey Anthony talking with her family during jailhouse visits just days after she was arrested in connection with the July disappearance of her daughter, 3-year-old Caylee Anthony.
In the more than 300 minutes of video released by the Orange County Sheriff's Department, Casey Anthony is shown laughing, crying and growing frustrated with the investigation and her family's questions.
When her mother, Cindy Anthony, confronted her with lead Detective Yuri Mellich's suspicions that she had had something to do with Caylee's disappearance, her daughter dodged the issue.
"Yuri [Mellich] has it set in his mind. He thinks you've done something to Caylee," Cindy Anthony told her. At that point, her daughter got up and, when she returned, steered the conversation in a different direction.
Casey Anthony also said that she knows the conversations are being recorded and said,"there are things [she] directly needs to say" to each of her parents.
And to her missing daughter, Caylee, Anthony asked her mother to pass along a message that "Mommy loves her very much, and that she's the most important thing in this entire world to me. And to be brave."
Two months after the conversations took place, on Oct. 16, Casey Anthony was charged with first degree murder, aggravated child abuse, aggravated manslaughter and four counts of lying to investigators. She has pleaded not guilty to all charges.
Caylee Anthony has been missing since June but was not reported missing until a month later.
Despite a nationwide search effort, Caylee has not been found and evidence of decomposition was found in the trunk of the car Caylee's mother was driving before her arrest, according to investigators.
'I Would Lie, I Would Steal'
In the tapes, Anthony told her mother she would do almost anything to get Caylee back.
"I don't care what I have to do," she said. "When I told them I would lie, I would steal, I would do whatever, by any means, to get her back. That's exactly how I feel. It's the truth."
Ironically, at right around that time, police expressed frustration with Casey Anthony's reported willingness to lie and said she had been, if anything, a hindrance to the investigation.
"She hasn't told us anything," Orange County Deputy Sheriff Carlos Padilla told ABC News four days before the videos were made. "And the few things she has told us have turned out to be untrue. We're behind the eight-ball on this one."
In the tapes, Anthony told her family, as she reportedly told police, that a woman named Zenaida Gonzales was Caylee's nanny and was the last person to see her daughter alive. Gonzales, however, claimed to not even know the family and was cleared by police.
Anthony insinuated to her family that she would offer more help if released on bond but, after California bounty hunter Leonard Padilla paid the $500,000 to have her released in late August, she proved unhelpful.
"Maybe we got duped a little," Tony Padilla, Leonard's nephew, said at the time. "Maybe we overestimated her."
Last week, authorities released records of Internet searches performed on Anthony's home computer. Someone performed searches for "neck breaking" and "household weapons" on the home computer, according to court documents released in November.
On March 17, someone used the Anthonys' home computer to do Google searches for peroxide, shovels, acetone, alcohol and ways to make chloroform. Traces of chloroform, which is used to induce unconsciousness, were found in the trunk of Casey Anthony's car during forensic testing by a Tennessee lab, according to court documents.
The Associated Press contributed to this report.