Murder in the Heartland (2017)

S2E7 Shallow Grave

Title: Shallow Grave Plot: On Christmas Day in Noble, OK, a dog unexpectedly delivers a human skull to its owners' doorstep, reigniting a six-year-old cold case. With no clues to follow, the police delve into the complexities of the victim's history, piecing together the fragmented details in their quest for justice.