tirelessly to free them from prison we posed the questions aven everyone's been asking. why would steven avery do this? >> that's a great question. >> we speak to ken krats, that steven avery made himself a murderer. >> steven avery started planning this event the very first day he went to prison. why are you sitting here today? >> finally realized that someone needed to speak and bring forward the truth of what happened. >> so what did happen here? our story begins with teresa