3.77 avg rating — 5,590 ratings

4.17 avg rating — 102,508 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 — 662,266 ratings

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

4.20 avg rating — 62,854 ratings

"The best books I read during elementary school."

4.04 avg rating — 60,717 ratings

"The best books I read during middle school."

4.45 avg rating — 2,726,603 ratings

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

4.19 avg rating — 590,955 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 — 397,696 ratings