By Lynette Rice
Updated February 24, 2012 at 05:25 AM EST
Credit: George Pimentel/Getty Images; Michael Caulfield/Getty Images

If this isn’t the best piece casting news for fall, we don’t know what is: CBS just closed deals with Dennis Quaid and Michael Chiklis to star in a period piece about a real-life rodeo cowboy-turned-sheriff.

Quaid will make his series debut as Las Vegas lawdog Ralph Lamb in this untitled drama from writers Nicholas Pileggi and Greg Walker. Chiklis gets to chuck the white hat for a change and play a Chicago mob fixer named Johnny whose vision for building up Sin City doesn’t exactly gel with Lamb’s law-and-order approach.

Quaid has taken breaks from his lengthy film career by appearing in TV movies like HBO’s That Special Relationship in 2010.

Chiklis starred in the short-lived ABC drama No Ordinary Family after ending his Emmy-winning run on FX’s The Shield.

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