This film screens as part of The Pakula Paranoia Trilogy. Full details here.
Time Out review:
Inevitably softened by hints of self-congratulation concerning the success of Woodward and Bernstein's uncovering of the Watergate affair, Pakula's film is nevertheless remarkably intelligent, working both as an effective thriller (even though we know the outcome of their investigations) and as a virtually abstract charting of the dark corridors of corruption and power. Pakula's visual set-ups are often extraordinary, contrasting the light of the Washington Post newsroom with the shadows in which hides star informant Deep Throat, and dramatically engulfing Dustin Hoffman and Robert Redford in monumental buildings to stress the enormity of their task.
Here (and above) is the trailer.