| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31222 : Conversation with Astra | 31244, 31245 | 31191 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31245 : Astra's Theory | 31246, 31247, 31248 | 31222 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31247 : Fred's Theory | 31255, 31256 | 31245 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31256 : Inconstant Moon | 31266, 31267 | 31247 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31266 : The Sea of the Dead | 31275 | 31256 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31275 : The Grey-Robed Figure | 31319, 31320, 31321 | 31266 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 31319 : The Death of Astra | 42426, 42427, 42428 | 31275 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 42427 : In Vincent's Laboratory | 42432, 42433 | 31319 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 42433 : The Two Freds | 43433, 43434, 43435 | 42427 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 43434 : Life After Death? | 43450, 43451, 43452, 43453 | 42433 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 43451 : A Return to Life? | 44716, 44717, 44718 | 43434 |
| Episode Number and Title | Children of this Episode | Parent |
|---|---|---|
| View Tree - 44718 : That's What Can Happen If You Interfere With Forces Which You Don't Fully Comprehend | 44739, 44740 | 43451 |