witness in the trayvon martin case is changing his account of what happened that night. meanwhile, newly-released documents are raying more questions than answers today. florida officials released the last known video of martin. his autopsy results. pictures of zimmerman s wounds and much more. joining me live is karen desoto and defense attorney joey jackson. hi, guys, glad you re here. the witness originally told police, i want to be clear, he heard zimmerman crying for help the night of the shooting. now he s saying he s not sure who was doing the screaming. so how does this affect the prosecution s case? i think that was the one key thing everybody talked about, about how they heard these screams. and now, obviously, it s great that somebody was screaming and that somebody heard something, that way they can nail down the timing of it in the timeline, but now obviously you don t know who was screaming and what was said. so, really, what that has come down to is we know what time i