- Brendan Gleeson Sargento Gerry Boyle
- Don Cheadle Agente FBI Wendell Everett
- Liam Cunningham Francis Sheehy
- David Wilmot Liam O'Leary
- Mark Strong Clive Cornell
- Fionnula Flanagan Eileen Boyle
- Dominique McElligott Aoife O'Carroll
- Pat Shortt Colum Hennessey
- Laurence Kinlan Fotógrafo
- Gary Lydon Inspector Gerry Stanton
- Owen Sharpe Billy Devaney