A Mountain Grove Man has entered guilty plea to first degree involuntary manslaughter charges in the death of a West Plains Couple in 2017. 35 Year Old Adam Housley was charged with second degree murder after the tractor trailer he was driving hit the back of a pickup that had stopped at a red light in Seymour forcing it to hit the back of another semi. Two people in the pickup, 48 year old Tasha Briggs and 47 year old Leo Walker both of West Plains were both killed in the crash.