I absolutely adored these books as a child, so I was a bit wary of rereading them incase they didn't live up to my fond memories, but I recently started the series again and loved them! The books are short enough to easily be managed in a few hours, the characters are likeable (I totally used to want Lola to be my best friend) and the action is fast-paced and fun. This book - the first in the series - is a little difficult to get started on as the overall plot is being introduced, but once the action gets started you'll be hooked!This is a brilliant series that is perfect for older children/early teens, I highly recommend it :)