LOS ANGELES - The latest chapter in "The Chronicles of Narnia" saga has sailed to the top of the weekend box office, though the franchise is floundering with a weak debut compared to the first two movies.

"The Voyage of the Dawn Treader," the third in the franchise based on C.S. Lewis' series of fantasy novels, took in $24.5 million. That's a huge drop from 2005's "The Lion, the Witch and the Wardrobe" with $65.6 million and 2008's "Prince Caspian" with $55 million.

Johnny Depp and Angelina Jolie's romantic thriller "The Tourist" opened in second-place with $17 million.

The film features Jolie as an Englishwoman who picks up a mild-mannered American (Depp) on a train in Europe as a diversion while she's on the run from cops and gangsters.