From CSIs to spies: CSI creator Anthony Zuiker is developing a spy drama for CBS, an offshoot of Robert Ludlum’s Jason Bourne series of novels. Entitled Treadstone, the drama project, from CBS TV Studios and Zuiker’s studio-based Dare to Pass, centers on the workings of Treadstone 71, the black-ops arm of the CIA featured in the Ludlum novels. John Glenn (Eagle Eye) will pen the script and executive produce with Zuiker. The project has received a script commitment by CBS. In addition to focusing on development under his first-look deal with CBS Studios, Zuiker recently returned to the mothership CSI series for his first full-time gig on the franchise in several years.