Pendragon book five black water

I give this a book a five stars becauase it is always changing things up. There is parts were you are nervous and excited. If you like all sorts of war. In the first book it's bascilly knights vs warriors and the bad guy sells explosives to the warriors. Which shouldn't be happening because it will cause the knights to die. They dont want to happen because then the bad guy will win. They second one Is about a lost powerful city called faar they have to stop the bad guy from destroying Faar.