Main Characters Barry Pettigrew 26 main appearances PC Callum McCarthy 26 main appearances Sergeant Marlene Pettigrew 26 main appearances Inspector Finn O'Hare 26 main appearances Nicole Devine-Dunwoody 24 main appearances Clint Devine-Dunwoody 23 main appearances Concepta O'Hare 22 main appearances Siobhan O'Hare 22 main appearances DC Leila Hussain 10 main appearances DC Alistair Quinn 10 main appearances DC Jo Lipton 6 main appearances