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| Cast: | | |
| Michael Caffee 29 episodes, 2006-2008 | | Jason Isaacs |
| Tommy Caffee 29 episodes, 2006-2008 | | Jason Clarke |
| Eileen Caffee 29 episodes, 2006-2008 | | Annabeth Gish |
| Rose Caffee 25 episodes, 2006-2008 | | Fionnula Flanagan |
| Declan 'Decko' Griggs 20 episodes, 2006-2008 | | Ethan Embry |
| Representative Donatello 15 episodes, 2006-2008 | | Matt Servitto |
| Judd Fitzgerald 10 episodes, 2006-2007 | | Len Cariou |
| Martin Kilpatrick 6 episodes, 2008 | | Peter Gerety |
| Dana Chase 5 episodes, 2007 | | Janel Moloney |
| Shannon McCarthy 4 episodes, 2006 | | Scottie Thompson |
| Mr. Speaker 4 episodes, 2006 | | Michael Gaston |
| Stan 3 episodes, 2008 | | Jack McGee |
| Agent Jarvis / ... 3 episodes, 2008 | | Bill Camp |
| Det. Jonesie / ... 2 episodes, 2007 | | Peter Berkrot |
| Martha Danners 1 episode, 2007 | | Aya Cash |
| Milton 1 episode, 2008 | | Geoffrey Cantor |
| Atty. General Dan Vanderpool 1 episode, 2008 | | Will Lyman |
| Jacob Weiss 1 episode, 2006 | | Mark Margolis |
| Barfly 1 episode, 2006 | | Gary Craig |
| Agent Wabash 1 episode, 2007 | | Billy Silvia |
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