Wow I was harsh on this book ten years ago, but it kinda deserved it. Sandys and Dennys aren't well-developed characters and don't make good protagonists (honestly they barely added anything to the previous books, and I didn't miss them one bit in the Wrinkle in Time movie). The plot is still pretty much Christian nonsense, although there's a thing about them falling in love with the same girl that's... sort of... weird?

I also can't get over the fact that they come back and then conceal their adventure from their family. WTF.

--- original review below ---

Pointless, boring and kind of inane. Sandy and Dennys are not very good characters, and the plot is a rambling, irritating jumble of nonsense. Reminds me of the worst of the Narnia books.