Nikki's mental instability worsens, and Harry and Leo are forced to get her psychiatric help.
| Name | Type | Role | |
|---|---|---|---|
| Timothy Prager | Writer | ||
| Michele Austin | Guest Star | Cherie Maskell | |
| Sinéad Keenan | Guest Star | Naomi Silverlake | |
| Jacquetta May | Guest Star | Dr. Stephanie Banks | |
| Carlyss Peer | Guest Star | Shop Assistant | |
| Jack Pierce | Guest Star | Police Officer | |
| You-Ri Yamanaka | Guest Star | Ying McCoy | |
| Ysobel Gonzalez | Guest Star | Gemma McFea | |
| Sorcha Cusack | Guest Star | Miranda Silverlake | |
| Adrianna Bertola | Guest Star | 8 Year Old Girl | |
| Kelly Harrison | Guest Star | D.C. Julia Catina | |
| Vilma Hollingbery | Guest Star | Elderly Volunteer | |
| Roy Marsden | Guest Star | Prof. Nigel Silverlake | |
| Mark Dexter | Guest Star | Mr Alex Leith | |
| Mark Lewis Jones | Guest Star | D.I. Frank Skipper | |
| Tom Kanji | Guest Star | Pharmacologist | |
| Kemal Sylvester | Guest Star | Security Guard | |
| Tania Rodrigues | Guest Star | Administrator | |
| Michael Shaeffer | Guest Star | Jason Bodle | |
| Susan Tully | Director |