A plea agreement reached by a 22-year-old Merrill man will send him to prison for 25 years for killing his father. Fifty-five-year-old Kevin Monroe was found stabbed to death in his apartment two years ago. An autopsy revealed Monroe had been stabbed 26 times. Tyler Monroe was charged with first-degree intentional homicide in 2017 and he entered a guilty plea last June. When he gets out of prison, Monroe will be on extended supervision for another 20 years.