Defense attorneys celebrate Brendan Dassey ruling** FILE ** Steven Avery looks around a courtroom in the Calumet County Courthouse before the verdict was read in his trial, March 18, 2007, in Chilton, Wis. Avery was found guilty of first-degree intentional homicide in the murder of photographer Teresa Halbach. Avery, who spent 18 years in prison for a rape he didn"t commit only to be convicted of committing a murder 3 years...