 McGee faced a 50-year sentence, but as part of a deal requiring him to testify against Peterson in forthcoming trials, prosecutors agreed to charge him with a lesser offense carrying an 8-year term.Peterson was tried in January for the murder of Wildermuth and the attempted murder of Kotso.The prosecution's evidence included Peterson's confessions, the shotgun and shell identification, McGee's testimony, and Kotso's eyewitness account.