because she was a very strong person. >> can crowds charge brandon dassey for a coconspirator in her urder. >> i intend to hold each of these defendants accountable for the rape, torture, murder of teresa. >> but not so fast. dassey recanted his statements. just before the trial, he dismissed the rape charge against him, and did not allow any of those allegations against avery's treatment of women, and avery was never charged with assaulting his ex fiancÉe or raping the teen. to this day he denies all the allegations. those handcuffs and shackles? no evidence ever link them to teresa. still, in the spring of 2007, they convicted both dassey and avery to murdering teresa. they were both sentenced to life and present. >> you are probably the most dangerous individual to ever step foot in the courtroom. >> it seemed like the avery saga had ended, but eight years later making a murderer would put kratz in the hot seat. >> coming up. >> was stephen avery framed? >> is it possible that that blood could've been tainted? >> when dateline continues. ontinues y & gum gives us the dual action ef