Michael Mann has found his next crime story to adapt, enlisting Sheldon Turner to pen “Big Tuna,” a biopic of Chicago mob boss Tony Accardo and Sam Giancana, the protege that replaced him.

Pic is one of several that could become Mann’s followup to last year’s “Public Enemies” and the pilot episode of David Milch’s gambling drama “Luck,” that HBO starts airing next year.

Turner, who co-wrote “Up in the Air” with Jason Reitman, will work on “Big Tuna” as he preps his directorial debut on the independently produced revenge drama “By Virtue Fall,” that Colin Farrell and Eric Bana are attached to star in and Jennifer Klein will produce early next year.

The scribe has a number of high-profile projects on his plate, including producing the romantic comedy “Kiss and Tell” at Universal and “Man Camp” at Sony, together with Klein. They’re also producing “Paths of Glory” at Sony, “Orbit” at Fox 2000 and “Two Minutes to Midnight” at Fox, all of which Turner wrote.

Additionally Klein and Turner have four TV projects set up at NBC, ABC, CBS and FX.

Since “Big Tuna” is not yet set up at a studio, Mann ponied up Turner’s seven-figure fee from his own development fund.

Separately, Mann has also been eyeing a medieval pic about the bloody battle of Agincourt, between England and France, based on Bernard Cornwell’s bestseller “Agincourt.” The 1415 battle was immortalized by William Shakespeare in “Henry V.” Another is a biopic of WWII photographer Robert Capa.