Episode 8 refers to:
- Series 1: Amongst Us
- Series 2: A Deadly Party
- Series 3: Rue Morgue
- Series 4: Unlike Father, Unlike Son
- Series 5: Flames of Love
- Series 6: Murder in the Polls
- Series 7: Melodies of Murder
- Series 8: Murder Begins at Home
- Series 9: Now You See Him, Now You Don't