Oil. Power. Religion. Family. Corruption! There Will Be Blood in this week's Zach on Film. Show your thanks to Major Spoilers for this episode by becoming a Major Spoilers Patron at patreon.com/MajorSpoilers. It will help ensure Zach on Film continues far into the future! THERE WILL BE BLOOD There Will Be Blood is a 2007 American drama film written and directed by Paul Thomas Anderson. It stars Daniel Day-Lewis and Paul Dano. The film was inspired by Upton Sinclair's novel Oil!. It tells the story of a silver miner-turned-oilman (Day-Lewis) on a ruthless quest for wealth during Southern California's oil boom of the late 19th and early 20th centuries. Kevin J. O'Connor, Ciarán Hinds, and Dillon Freasier are also featured in the film.