If Amazon's recent foray into British period drama leaves you cold, its Prime Instant Video service now has something grittier on tap: The FX Network's Justified. Thanks to a new deal with Sony Pictures Television, you can download the western-style crime series for no additional cost if you're a subscriber on the $79 yearly service. It was up for grabs at $1.99 a pop on Instant Video before, where Amazon said it was one of its most popular buys, and nowPrime subscribers can grab episodes from seasons one through three. Season four will arrive after its current run on FX concludes, though individual episodes of the latter are available on Instant right after they air, if you're willing to pay $1.99. Amazon also added all seven seasons of Sony's The Shield to Prime Instant, so if you're looking to go on a crime spree, check the PR after the break.