It's been awhile since we've had to face facts that FX's 'Justified' will fire its last round with a sixth and final season in 2015, but if we are to say goodbye to Raylan Given and Boyd Crowder for good, the character actor-heavy series may have saved the best for last. Enter Sam Elliott and Garret Dillahunt, joining 'Justified' season 6 in important recurring roles for our last year in Harlan County!

Per FX, past season 'Parks and Recreation' star Elliott will take the role of Markham, "a legendary Kentucky gangster who returns from exile with a private army and bags of cash (earned growing legal weed in Colorado), hell-bent on winning back his empire and the lost love of his life, Katherine Hale (Mary Steenburgen)." Markham ends up butting heads with Raylan and Boyd as well as Katherine, who maintains a believe that the gravelly-voiced Markham is the rat who brought down her husband's criminal empire.

Elsewhere, Timothy Olyphant's former 'Deadwood' co-star (your move, Kurt Sutter) will play special ops veteran Walker, a former soldier turned private contractor who handles security for a quasi-legal businessman, "a job to which he brings all of the skills (as well as the demons) he acquired during his military career." Walker also hides a simmering rage behind his exterior of cold professionalism, at least until Raylan and Boyd wear his facade away to reveal the monster within.

When last we heard of 'Justified''s final run, producer Graham Yost teased the possibility of a time jump that would bring Art Mullen (Nick Searcy) out of his hospital predicament for one last case, while arshals Tim (Jacob Pitts) and Rachel (Danielle Brooks) would also receive a more prominent spotlight. Boyd (Walton Goggins) will return to his role as the season's central antagonist, though plenty of other criminal agents new and old will make their presences felt as well.

It'll be a long and winding road that until 'Justified' premieres its final season on FX in 2015, but what say you? Are you excited by the latest castings of Raylan's last case?