Episode 4 refers to:
- Series 1: Missing a Body?
- Series 2: A Deadly Curse
- Series 3: Ye of Little Faith
- Series 4: Until Death Do You Part
- Series 5: A Personal Murder
- Series 6: Stumped in Murder
- Series 7: The Healer
- Series 8: Frappe Death Day
- Series 9: Pirates of the Murder Scene