| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | STP | 1 | The End is the Beginning | |
| 2 | STP | 1 | The Impossible Box | |
| 3 | STP | 2 | The Star Gazer |
| Series : | STP Season 1 |
| Episode : | The End is the Beginning |
| Series : | STP Season 1 |
| Episode : | The Impossible Box |
| Series : | STP Season 2 |
| Episode : | The Star Gazer |
| © Graham & Ian Kennedy | Page views : 7,668 | Last updated : 1 Jan 2022 |
