HBO Documentary Films has acquired domestic pay television rights to Alex Gibney's Oscar nominated documentary Taxi To The Dark Side.

The film will debut on HBO in September after HBO executives brokered a deal with Discovery Communications. THINKFilm holds theatrical rights.

Taxi To The Dark Side investigates the homicide of an innocent taxi driver at the Bagram Air Force Base in Afghanistan while exposing the darker side of US detention and interrogation policy.

Gibney produced with Eva Orner and Susannah Shipman while Don Glascoff, Robert Johnson, Sidney Blumenthal, Jedd Wider and Todd Wider served as executive producers.

Discovery acquired basic cable rights last summer following the film's world premiere at Tribeca. However executives have since pulled the broadcast slot because they deemed the subject matter too controversial ahead of plans to take the company public.

Gibney expressed anger at the time and said: 'Having directed Enron, very little about this kind of corporate behavior shocks me, but I am surprised that a network that touts itself as a supporter of documentaries would be so shamelessly craven.' Discovery indicated that unless it could sell the broadcast rights at a profit it would keep the film off the air.