Upon a visit to her grandparent's house, Winnie discovers that their tortoise, Billy, has gone missing. She sets out on a journey to get Billy back, embodying her inner detective and meeting plenty of bizarre characters along the way.
| Actor | Role |
|---|---|
| AAmelia GrahamWinnie | Winnie |
| BBilly the TortoiseBilly the Tortoise | Billy the Tortoise |
| JJoseph AinsworthGrandad | Grandad |
| MMaureen AinsworthGrandma | Grandma |
| MMia AinsworthScouse Knight | Scouse Knight |
 Poppy AshbrookThe Nihilist | The Nihilist |
| SSebastian Nevitt'Not' Paul | 'Not' Paul |
| FFreddie Ives'Not' John | 'Not' John |
| OOlivia HenryThe Northerner | The Northerner |
| PPaula AinsworthWoman #1 | Woman #1 |
| BBeth PridgeonWoman #2 | Woman #2 |
| HHarry DeaconMan #1 | Man #1 |
| NNeil AinsworthMan #2 | Man #2 |