'Justified' review: Cool cop returns

It's a pouch, containing... well, that may giving too much away because this appears to be the core mystery of the fourth season, but I think we can say the "Dixie Mafia" may be involved.

This season, Raylan, about to become a daddy, gets a minor assist in his marshaling duties from a very earnest rent-a-cop, Constable Bob Sweeney (Patton Oswalt). Meanwhile, Boyd Crowder (Walton Goggins) -- who notices that his illicit oxycodone sideline has dropped off because a newcomer to Harlan County, Preacher Billy (Joe Mazzello), is reforming all the sinners -- needs some help, too. He turns to old Army buddy Colton Rhodes (Ron Eldard) for that.

Pity the moron miscreant who crosses him and who invariably does. But there are a couple of fun -- if that's the right word -- departures from form. First is Eldard's cheery hit man, Rhodes, who -- with long blond tresses -- looks like a younger and less-bloated version of Gerard Depardieu. Then there is Raylan's new wingman, Constable Bob, who's a cross between Buford T. Justice and Barney Fife -- three parts shrewd, two parts inept. Bleak and sometimes rare as it can be, humor is always a welcome element in "Justified," especially Tuesday night.