After Bud and Melinda Billings were murdered, investigators discovered multiple people were connected to the crime.
When Lisa Nichols was shot to death and then set on fire, investigators soon realized someone living near her home was to blame.
Blood-covered cash ultimately led investigators to Randy Triplett, who viciously murdered his father and stepmom.
When Raul Guillen vanished, investigators thought they were dealing with a missing persons case. They soon realized it was actually a gruesome and horrifying murder.