| Choose whether or not to see the solution to the mystery by clicking "Spoiler" or "Non-Spoiler" | |||
| Six Days | Spoiler | Non-Spoiler | |
| The Trojan Tanker | Spoiler | Non-Spoiler | |
| A Cellar Full of Silence | Spoiler | Non-Spoiler | |
| The Pied Piper of Hambledown | Spoiler | Non-Spoiler | |
| One of Our Aircraft Is Empty | Spoiler | Non-Spoiler | |
| The Man in the Elegant Room | Spoiler | Non-Spoiler | |
| Handicap Dead | Spoiler | Non-Spoiler | |
| Black Out | Spoiler | Non-Spoiler | |
| The Double Death of Charlie Crippin | Spoiler | Non-Spoiler | |
| The Treasure of the Costa del Sol | Spoiler | Non-Spoiler | |
| Who Plays the Dummy? | Spoiler | Non-Spoiler | |
| The Man Who Got a New Face | Spoiler | Non-Spoiler | |
| Les Fleurs du Mal | Spoiler | Non-Spoiler | |
| The Shift That Never Was | Spoiler | Non-Spoiler | |
| Dead Men Die Twice | Spoiler | Non-Spoiler | |
| A Ticket to Nowhere | Spoiler | Non-Spoiler | |
| The Last Train to Redbridge | Spoiler | Non-Spoiler | |
| The Ghost of Mary Burnham | Spoiler | Non-Spoiler | |
| The Man from X | Spoiler | Non-Spoiler | |
| Death on Reflection | Spoiler | Non-Spoiler | |
| The Perfect Operation | Spoiler | Non-Spoiler | |
| The Duplicated Man | Spoiler | Non-Spoiler | |
| The Mysterious Man in the Flying Machine | Spoiler | Non-Spoiler | |
| Spencer Bodily Is Sixty Years | Spoiler | Non-Spoiler | |
| A Fish out of Water | Spoiler | Non-Spoiler | |
| A Small War of Nerves | Spoiler | Non-Spoiler | |
| The Bones of Byrom Blaine | Spoiler | Non-Spoiler | |
| Soup of the Day | Spoiler | Non-Spoiler | |