In 1945, British Allied Forces commissioned director Alfred Hitchcock (circa "Spellbound" era) to supervise a documentary on the liberation of Nazi concentration camps. Titled "German Concentration Camps: Factual Survey," the project foundered under political and artistic pressures. Thus, enter producer Brett Ratner and director André Singer, whose "Night Will Fall" plays HBO on Monday, January 26 at 9pm Est. Watch trailers and clips below. The presentation combines restored, hardly seen archival footage (including pieces of an elusive sixth reel thought to be lost) and eyewitness testimony to offer an exclusive, behind-the-scenes look at a film that was never finished. (An incomplete version played the Berlin Film Festival in 1984, and PBS in 1985, under the title "Memory of the Camps.") Newsweek has a fascinating, in-depth look at what went wrong and what this footage looks like: "Two women drag an emaciated female corpse »