Detective Sergeant Tommy Murphy is a maverick cop with a dark past. After failing a psychiatric assessment, he is given one last chance by his boss and given a dangerous undercover assignment. Murphy is a loner with little to lose and deals with everything on his own terms. This time around, however, Murphy has an ally in Detective Inspector Annie Guthrie.

• James Nesbitt
• Del Synnott
• Mark Benton
• Owen Teale