3.77 avg rating — 5,580 ratings

4.17 avg rating — 102,343 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 — 661,013 ratings

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

4.20 avg rating — 62,826 ratings

"The best books I read during elementary school."

4.04 avg rating — 60,499 ratings

"The best books I read during middle school."

4.45 avg rating — 2,719,833 ratings

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

4.19 avg rating — 589,275 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 — 395,793 ratings