Mason McCulley

Sheldon welcomes Missy to the world of atheism by encouraging her to question the Bible. Also, Meemaw is determined to catch George, Sr. in a lie; and Mary helps Pastor Jeff (series regular MATT HOBBY) search for a youth pastor.

Christy is troubled when sparks fly between Tammy and chef Rudy; Bonnie overreacts when her therapist accuses her of rejecting his help.

The investigation of a lab tech's murder reveals strange similarities to a cold case from the 1950s; the team catches a glimpse of what goes on in the lab.