2014-present, 2 Seasons
Mentioned in Season 2, Episode 3/7

Police drama that looks at investigation into murder and corruption from outside and within the law.  Featuring a stellar cast in each season so far; Matthew McConaughey and Woody Harrelson in Season 1, and Colin Farrell, Colin Farrell's moustache, and Vince Vaughan in Season 2. 

Everybody loved Season 1 for being dark, compelling and richly weird, but Season 2 pretty much stunk up the room.  Jamie agrees with this consensus while Hywel was never that big of a fan in the first place.