Maximum Ride 2: School's Out -- Forever (by James Patterson)

Max and the Flock engage in plenty of fighting, chases, and escape plans while Ari and the evil scientists do their scheming. Apparently there's a plot to kill off half the people in the world, method unspecified, reasons rather vague. (You know, that's what evil scientists do.)

Meanwhile the Flock get taken in by an apparently nice woman ... until it turns out that she's evil too. And they get to go to a normal school for a while ... until it turns out that the school is evil too. And Iggy finds his parents ... until (wait for it) it turns out they're evil too. Well, not evil -- just bad. And so on.

By the end of the book, the main characters have been attacked, injured, healed, are captured, escape, captured, escape, etc. But they've gotten nowhere. This appears to be a trilogy with no actual narrative arc. Exciting stuff happens, for no discernible reason, and what little actual story there is makes no sense at all. It's a mere contrivance, the struts that hold up the ride -- you're not supposed to pay attention to them. You're just supposed to surrender to the ride. There's something horribly cynical about all this. It's harmless fun, one supposes, but it is possible to write a fun story and still respect the intelligence of your audience.