NEW YORK (AP) -- Keira Knightley acknowledges she was a bit skeptical at first about appearing in a movie that shared a name with a Disney ride.
''I was like, 'Wait a minute, you're doing a pirate movie -- something that hasn't worked in about 50 years -- and it's based on an amusement park ride?!'' the actress told the New York Daily News for a story published Sunday.
The 2003 film ''Pirates of the Caribbean: The Curse of the Black Pearl'' went on to be a $650 million worldwide success, and co-star Johnny Depp earned an Oscar nomination for his role.
Knightley appears again in the sequel ''Pirates of the Caribbean: Dead Man's Chest,'' opening Friday. A third ''Pirates'' installment is due out Memorial Day weekend next year.
Knightley says it wasn't until she was at the premiere of the first ''Pirates'' movie with co-star Orlando Bloom that she knew the premise would work.
''Orlando and I were sitting next to each other at the premiere, which was the first time I'd seen it, and we'd had a big talk and decided that if it was awful, we'd still leave the theater all smiles,'' she said.
''Halfway through the film, I nudged him and said, 'It's quite good, isn't it?' and he was like 'Yeah, it's really good.' We had no idea it would work.''