When studios create films they see as potential franchise launchers, they sign the key actors involved on for several further instalments should they get made. The most common deal usually involves three films in total.
Out doing press for Gore Verbinski's big-budget "The Lone Ranger" feature, it has been revealed that only two of the three key characters are actually locked down for potential sequels.
Armie Hammer, who plays the title character, tells E! Online that he's signed on for several more films. His love interest, actress Ruth Wilson, added that she is "signed for three."
One person who isn't signed on for more though is Johnny Depp. The actor says he refused to sign a multi-picture deal, but is open to returning. He says: "I think it was a one-shot deal. [But] if they started talking sequel on this I'd be ready to go in a second."
"The Lone Ranger" hits cinemas worldwide starting this week.