The Sorcerer of the North (Ranger's Apprentice, #5) - John Flanagan
Well, that was dumb...

That ending wasn't a cliffhanger--it just stopped in the middle of the story! Too bad the story wasn't anywhere near engaging enough to make me want to find out what happens next. I should have just stopped at book 4...it wrapped things up nicely and was actually entertaining! Waste of time!