Sean Grayson has been sentenced to 20 years in prison for the murder of Sonya Massey in Sangamon County, Illinois, in 2024. Sean Grayson was found guilty last October of second-degree murder for the shooting of Sonya Massey. The judge sentenced Grayson to 20 years in the Illinois Department of Corrections followed by two years of mandatory supervised release. What happened in the Sonya Massey shooting? At trial last fall, Dawson Farley, Grayson’s former partner on the night of the Massey shooting, testified during the trial that he was not afraid of Massey during the call, but instead feared Grayson.