Every so often, a show arrives and instantly feels lived-in, like a comfortable old couch with slight depressions in all the right places. FX’s “Terriers’’ is one of those shows, beautifully torn and frayed from the get-go, which is tonight at 10. Like its lead actors, Donal Logue and Michael Raymond-James (Rene on “True Blood’’), this comic drama is scruffy, unconventional, and irresistible.
Essentially, “Terriers’’ is a buddy private-eye series, and there are cases of the week — usually small cases that snowball into messy, high-stakes puzzles. Producers Shawn Ryan of “The Shield’’ and Ted Griffin, who wrote the “Ocean’s Eleven’’ remake, know how to unfold unpredictable twists with an effortless forward motion — the plots are rambling yet tight. But please note: “Terriers’’ is far from another cool procedural with office desks and badges. Set in San Diego’s ragged, hippie-tinged Ocean Beach neighborhood, the series is as much about retro townie atmosphere and two flawed heroes as it is about crime-solving. This is beachfront noir.