| Answer | Crossword Clue |
|---|---|
| OIL | Book on which "There Will Be Blood" was based |
| OIL | Upton Sinclair novel on which "There Will Be Blood" is based |
| OIL | Upton Sinclair novel that was the inspiration for "There Will Be Blood" |
| SHREK | William Steig book on which a hit 2001 film was based |
