A fire kills several Latino squatters and a firefighter, leaving Tommy struggling with the political fallout; Colin's torch for Michael's girlfriend Kath begins to affect his work; Declan uncovers a lead and brings in another investigator.

Cast: Jason Isaacs, Jason Clarke, Annabeth Gish, Ethan Embry, Kevin Chapman, Fiona C. Erickson, Brían F. O'Byrne, Fionnula Flanagan, Kerry O'Malley, Peter Gerety, Dominic Fumusa, Jack McGee, Matt Servitto, Tina Benko, Billy Smith