There was a certain amount of that sibling thing in the other two books, but you'd think having to depend on each other and facing all these death-defying situations it would bring them closer together and they'd grow out of too much of that. (Of course Ron Weasley never did, so there you go.)
The plot was serviceable, but I guess I'm too jaded. I never fell for Alistair Oh's or Ian Kabra's nice-guy games. I knew they'd double cross the kids. I hope Amy and Dan wise up and pull some double crosses of their own soon or I'm going to be disappointed.
It's been a little while since I read the first two. I could kinda see how this series would play out and went on to other things, but since I've been getting them for the library (can you believe we've never had any of them here before?) and there are some boys devouring them I though I should finish the series so I can geek out with them.
Of course, now I find out there's going to be a whole new series! Whew!
The Sword Thief (The 39 Clues, No. 3)