Friends and family gathered in Columbia to mourn the loss of a couple known for helping the community.
Sunday afternoon more than 200 people attended a memorial service at the Columbia-Union Presbyterian Church for Barbara Peterson and Brian Walker.
The two were found shot to death in their home on Dec. 8th. Police believe the son, Blake Walker, may be responsible.
According to Police, Blake's older brother, Manning has not been able to give any reason as to why the couple was killed.
Brian Walker, a construction worker in Adair County, started the Knifley Volunteer Fire Department.
The couple met while working in the Peace Corps.