rudolph dissected the original testimony of blood pattern expert dwayne dever. >> did dwayne dever misrepresent? yes. did dwayne dever's testimony make a difference in this case? yes. >> reporter: after listening to the arguments about due process violations and per jered testimony, the judge ruled michael peterson was entitled to a new trial, and there it was, michael peterson's conviction was tossed out. his family was overwhelmed. >> i was weeping with joy and shock and could not believe that there was hope. >> i was like, my dad's getting out. we're going to have our dad back. >> for the peterson children, now there was only joy. >> lots of hugs, lots of happy, happy photographs and so we're all like jumping up into the air in a silly picture of just so so happy. >> reporter: 24 hours after the judge issued his decision sharply criticizing the blood pattern expert's work on the case, 68-year-old michael peterson was released on a $300,000 bond. >> i imagine you remember the day, hour and date. >> i do, december the 15th. all my kids were there. oh, my god, my grandson had been born, a sweet