House of Hades - I'd been waiting for this for a year. Now I'm waiting for Book 5. It's an endless struggle.
I was so nervous for this installation. I am a big fan of the easy, silly humour of this series and the last book just felt kind of flat to me. But this was great. Easily one of the best of the series.
The plot was very similar to the rest of Riordan's works. Just lost of action and myths flying about. Sometimes I think it gets too chaotic and I'll have to re-read a passage.
My biggest issue is the flow. The character changes happen too often and always end on an extremely irritating cliffhanger. And it confuses me because you then have to work out where the next character is and what they're doing and it's just too much for my lazy, tired brain.
I adore this series and the characters and I'll be very sad when they're over. But I have grown a little too mature for them, because some of it just isn't funny anymore :(
By the way, favourite character (other than Percy and Annabeth of course) is Leo. (tiny little squee)