Marlon Brando was paid $1 million in advance. He threatened to quit and keep the advance. Francis Ford Coppola told his agent that he didn't care, and if they couldn't get Brando, they would try Jack Nicholson, Robert Redford, and then Al Pacino. Brando eventually turned up late, drunk, 40kg (about 88lbs) overweight, and admitted he hadn't read the script or even "Heart of Darkness", the book it was based on. He read Coppola's script, and refused to do it. After days of arguments over single lines of dialogue, an ad-lib style script was agreed upon, and this was shot according to Brando's stipulations that he be filmed mostly in shadows.