According to The Futon Critic, HBO has passed on Fredric Lehne's (The Yellow-Eyed Demon) Last of the Ninth.
The series, which was ordered to pilot, is a "drama about clark's experiences as a rookie undercover officer assigned to keep tabs on the black panthers and other countercultural rabble-rousers during the post-vietnam era in new york, a period which saw scandalous levels of corruption among new york's finest". source.
Carl Franklin directed the pilot from a script by David Milch and Bill Clark. Lehne co-starred Clifton Powell, Lily Rabe, Michael Gaston and Michael Raymond-James.
Source: The Futon Critic.