so what do these new revelations mean to the casey anthony case? egal correspondent with trutv beth karas. >> good morning. >> what does this tell you about what the prosecution's going to do in this case? >> you know the prosecution charged casey with murder before the remains were found. and they weren't seeking death. once the remains were found, they changed their minds. and they're seeking death. and these were just bones, scattered bones. you know why? because of the tape around the mouth. the tape is everything. and that's why the defense has revealed in these depositions it's going after the tape. the position of the tape. was this child suffocated. did this child drown? this case is all about that tape. >> let's talk about dr. g., as she's known, the medical examiner. she's saying things that now, she's saying that, of course, duct tape is there, she ruled it a homicide. when you look at this deposition, do you see any holes in what she's saying? >> well, you can see what the defense is trying to do. she cannot determine the cause of death.