3.77 avg rating — 5,630 ratings

4.17 avg rating — 103,220 ratings

"It's not that there's a lot going on here, but the story is new enough and well-told."

3.91 avg rating — 666,909 ratings

"Goes down hill as the series goes on, but the first book is fantastic."

4.20 avg rating — 62,994 ratings

"The best books I read during elementary school."

4.04 avg rating — 61,067 ratings

"The best books I read during middle school."

4.45 avg rating — 2,747,059 ratings

"I liked the first book, but never felt compelled to read the rest."

4.19 avg rating — 596,521 ratings

"First book is five-star, next couple are good, but by 5 or 6 it's all a bit much."

4.19 avg rating — 406,393 ratings