Starring The following appear in the opening credits as series regulars: •
Tony Martin as Bill McCoy, a former detective searching for his missing son who is persuaded to rejoin the police •
Rachael Blake as Dr. Maxine Summers, a doctor who runs a community crisis centre •
Aaron Pedersen as Vince Cellini, an Italian-Australian lawyer at the crisis centre who later discovers his Aboriginal heritage (miniseries, 1.01–2.10) •
Jessica Napier as Gerry Davis, the receptionist at the crisis centre and a former street kid and sex worker herself (miniseries, 1.01–1.36) •
Alex Dimitriades as Detective Charlie Coustos, McCoy's partner (2.01–2.20, also starring in 1.09–1.36) •
Abi Tucker as Detective Kate Holbeck, colleague of McCoy and Coustos, who later becomes Coustos' wife (2.11–2.20, also starring in 2.01–2.10)
Also starring The following cast members are credited at the end of every episode in which they appear, before the preview of next week's episode and separated from the other guest actors. •
John Howard as Detective Frank Reilly, McCoy's corrupt former partner (miniseries, 1.01) •
Victoria Longley as Inspector Virginia King •
Tammy MacIntosh as Detective Kim Devlin, Reilly's partner, becomes McCoy's partner (miniseries, 1.01–1.08) •
Richard Carter as Detective Brian Deakin, colleague of McCoy and Coustos •
Mary Coustas as Louise Arden, Vince Cellini's replacement as the crisis centre's resident lawyer (2.11–2.20)
Recurring characters •
John O'Hare as Rob Summers, Maxine's husband, they later divorce (miniseries, 1.01–1.08) •
Abbie Cornish as Simone Summers, Maxine's daughter •
Jim Holt as Sergeant Graham Holbeck, Kate's father (1.26–2.16) • Mitchell McMahon as Nick McCoy, Bill's son (miniseries, 1.39–2.04) Former police detective John Haas acts as the show's police adviser and appears in the background of nearly every episode as Detective Mark Doyle, a colleague of McCoy and Deakin. Martin and Blake were the only actors to appear in every episode. They began an off screen relationship during the show's run and married in 2003. ==Production and broadcast==