As Nikki investigates the drowning of a young mother, Harry is called to an apparent suicide at an army base.
| Name | Type | Role | |
|---|---|---|---|
| Michael Crompton | Writer | ||
| Oliver Brown | Writer | ||
| Michelle Fairley | Guest Star | D.I. Suzy Harte | |
| Emma Lowndes | Guest Star | Claire Lockford | |
| Darren Morfitt | Guest Star | Sgt Jason McDermott | |
| Phaldut Sharma | Guest Star | D.S. James Stern | |
| Kieran Bew | Guest Star | Lt Stephen Lockford | |
| Kirsty Mitchell | Guest Star | Lottie Jenkins | |
| Theo Barklem-Biggs | Guest Star | Joseph Ryland | |
| Ralph Laurila | Guest Star | Ryan Axel | |
| Nathanael Baring | Guest Star | Danny Ferris | |
| Alicya Eyo | Guest Star | Joanne McDermott | |
| Brendan Mackey | Guest Star | Dennis Croft | |
| Steve Nicolson | Guest Star | Major Julian Rutherford | |
| David Ajala | Guest Star | Mark Blakefield | |
| Abigail Hardingham | Guest Star | Catherine 'Cats' Felton | |
| Philip Whitchurch | Guest Star | Martin Ferris | |
| Orion Lee | Guest Star | Dr Oliver Matthews | |
| Keith Boak | Director |