Disgraced former Wisconsin prosecutor Ken Kratz got Making a Murderer's Steven Avery convicted for the 2005 murder of Teresa Halbach, but apparently he wasn't satisfied to stop there. According to a letter Kratz wrote to Avery a little over a year ago, released Saturday on Twitter by Avery's lawyer Kathleen Zellner, Kratz wanted Avery to confess to him—so he could write a book about it.

The letter, dated September 6, 2015 and sent to Avery at Waupun Correctional Institution in Waupun, Wisconsin, alludes to a letter he received from Avery a week earlier, asking if Kratz checked out other fingerprints found on Halbach's car. 

Sources: Gawker