I am really sad that it doesn't look like Terriers will be coming back for a second season. Really, a fantastic show. I'm not exactly sure why it didn't garner decent ratings. It's one of FX's better offerings in recent years, IMO. Apparently, it's only been rating about 500k viewers on average, which is pretty poor. Maybe it's just tough to go up against L&O: SVU as a crime drama or something.
Anyway, Donal Logue is awesome, and I hope that somehow this show makes it a second season. At least if it doesn't, the season finale was good enough to be a series finale.