Casey Anthony's defense attorney Jose Baez just announced that he has written a tell-all book about the infamous trial.

The book, called “Presumed Guilty: Casey Anthony, The Inside Story”, comes out in July, a year after Anthony was acquitted of murdering her daughter, Caylee.

Although Baez told HLN’s Dr. Drew Monday night that Anthony will not financially benefit from the book, he did say it will shock readers on what they didn’t know about the case.

“There were certain pieces of evidence that never made it to trial -- never made it into discovery -- that I think were significant,” he said. “For various reasons, we didn't present certain things. And for various reasons, a lot was not made public. I think this is the first time … they're going to be able to read this book and get a completely different perspective as well as information that they just didn't know.”

Baez later told Dr. Drew what bothered him most about the trial.  

“I realize for the general public who's not involved in the legal system -- they look at this case -- [and] look at her behavior [and presumed she’s guilty],” he explained.. “This case was never about Casey's behavior. It was about how Caylee died.”

He added, “We would have never had the opportunity to put on our defense if that behavior was not made relevant. Let me be more specific -- June 16 -- Caylee died. So what happened after that is really irrelevant … unless there is someone fleeing or consciousness of guilt … [everything else] is irrelevant.”

Dr. Drew interjected, “The one thing we know about Casey – [she’s a] liar. That’s the only thing we know for sure about her.”

The interview went on for one hour. Watch the additional video clips posted below.

Video - Jose Baez: I was Casey’s harshest critic

Video - Jose Baez on why Casey never testified

Video - Web extra: Baez disgusted with treatment of Casey jury

Dr. Drew airs Monday through Thursday at 9 p.m. ET on HLN. Follow the show on Twitter @DrDrewHLN.