Dramatised accounts of five unsolved murders from British history. Julian Fellowes appears as a historical detective who guides the audience through the events leading up to the murder, and proposes a solution to each case. - IMDb
| Julian Fellowes Investigates: A Most Mysterious Murder | Japan |
| Julian Fellowes Investigates: A Most Mysterious Murder | United Kingdom |
| Thomas Brodie-Sangster [15] | John Duff (TV Episode: The Case of the Croydon Poisonings) (2005) |