The Battle of the Labyrinth

I finally picked up book #4 in this series after a long delay. IDK why–I liked the first 3 and I'd read a few other Rick Riordan books... I guess I felt like there wasn't much professional gain to be had in reading them since I already knew enough to promote the series, and they don't quite end on enough of a cliffhanger for me to want to immediately pick up the next one? But I got this on audiobook for a trip and enjoyed it.

The audiobook is kind of a mixed bag–it's a good story for a trip because it moves along and keeps me interested on long drives. But the narrator makes some weird choices? And seems to hand out accents to characters kind of randomly? And I feel like the accent he gives Ethan Nakamura is kinda racist?? And he makes Tyson sound like a South Park character with a developmental disability which is kinda...not great?? uhhh idk