Main •
Patrick Brammall as Sgt. James Hayes •
Genevieve O'Reilly as Dr. Elishia McKellar (series 1–2) •
Emma Booth as Kate Willis •
Emily Barclay as Sarah Hayes (series 1–2) •
Ned Dennehy as Patrick "Paddy" Fitzgerald (series 1–2) •
Sean Keenan as Charlie Thompson •
Hannah Monson as Kirsten "Kirstie" Darrow •
Aaron McGrath as Beau Cooper •
Rodger Corser as John Doe/William Blackburn •
Andrew McFarlane as Vic Eastley (series 1–2) •
Daniela Farinacci as Maria Rose Massola (series 1) • John Leary as Chris Rennox •
Luke Arnold as Owen Nillson (series 2–3) •
Rob Collins as Phil Holden (series 2–3) •
Pernilla August as Nicola Heysen (series 2–3) • Jessica Faulkner as Belle Donohue (series 3) •
Harry Tseng as Tam "Chi" Chi Wai (series 3) •
Dustin Clare as Mark Clayton-Stone (series 3)
Recurring •
Anni Finsterer as Caroline Eastley •
Lisa Flanagan as Kath •
Robert Menzies as Pete Rennox • Tessa Rose as Sharon •
Gerard Kennedy as Leon Massola • Antonio Kapusi-Starow as Young Leon • Phoebe Gorozidis as Anna •
Alison Whyte as Lucy Fitzgerald •
Nicholas Denton as Angus Fitzgerald •
Jacob Collins-Levy as Rory Fitzgerald •
Greg Stone as Russell •
Leila Gurruwiwi as Kalinda • James Monarski as Carlo Nico •
Katrina Milosevic as Ellen •
Lex Marinos as Steve Tripidakis •
Max Brown as David Goldman • Dalip Sondhi as Samarvart Chadra Gard • Rhys Mitchell as Young Paddy •
Jackson Gallagher as Raf •
Susan Prior as Anne Donohue • Taylor Ferguson as Judith Donohue • Reef Ireland as Luke Donohue • Simon Maiden as Duncan • Alex Rowe as Young Pete Rennox •
Joe Klocek as Josh
Guests •
Anna McGahan as Millie •
Eddie Baroo as Gary •
Freya Stafford as Amy •
Marta Kaczmarek as Registrar •
Shareena Clanton as Elena Triggs •
Tom Budge as Rob == Episodes ==