The Wall Street Journal: When you sell the rights to your books, do the contracts give you some oversight over the screenplay, or is it out of your hands?

Mr. McCarthy: No, you sell it and you go home and go to bed. You don’t embroil yourself in somebody else’s project.

WSJ: When you first went to the film set, how did it compare with how you saw “The Road” in your head?

CM: I guess my notion of what was going on in “The Road” did not include 60 to 80 people and a bunch of cameras. [Director] Dick Pearce and I made a film in North Carolina about 30 years ago and I thought, “This is just hell. Who would do this?” Instead, I get up and have a cup of coffee and wander around and read a little bit, sit down and type a few words and look out the window.

WSJ: But is there something compelling about the collaborative process compared to the solitary job of writing?

CM: Yes, it would compel you to avoid it at all costs.