When a man plummets from a high-rise building, the Lyell team cross paths with the NCA and a notorious mafia group, pushing Nikki to make a tough decision.
| Name | Type | Role | |
|---|---|---|---|
| Jim Keeble | Writer | ||
| Dudi Appleton | Writer | ||
| Issy Knopfler | Guest Star | Chloe / Serena | |
| Matteo Carlomagno | Guest Star | Stephen | |
| Orion Lewis | Guest Star | Student | |
| Pearl Jarrett | Guest Star | Older woman | |
| Karishma Navekar | Guest Star | NCA Detective | |
| Abigail Climer | Guest Star | Teacher | |
| Kuni Tomita | Guest Star | Soju | |
| Will Willoughby | Guest Star | Anthony Drinkwater | |
| Tristan Ruggeri | Guest Star | Luca | |
| Sophia Myles | Guest Star | Laine Cassidy | |
| Dudi Appleton | Director |