Following a traumatic incident, Lily, a socially-aware writer, attempts to restart her life by touring the country with her friend, Zara. After accepting a free boat tour on the "Lady-Jane" through England's canals, the pair begin to realise that there are evils lurking beneath the water that are far more ancient and powerful than they could have ever imagined.
| Actor | Role |
|---|---|
 Helene UdyRÁN / Lysette Monk | RÁN / Lysette Monk |
| NNatasha LintonLily O'Cleirigh | Lily O'Cleirigh |
| SSean BothaWillard Monk | Willard Monk |
 Rosalind StockwellCaroline O'Cleirigh | Caroline O'Cleirigh |
| AAndrew FettesColm O'Cleirigh | Colm O'Cleirigh |
| IIan MasseyJames | James |
 Bryony HarveyZara Taha | Zara Taha |