I'm glad Knight's Castle gets your vote of approval since we're about to start it! Like I said in another comment, I'm not sure I even read any of the others, and before I looked it up the other night I thought Seven Day Magic and Magic By the Lake were the only other ones, or at least those were the only other names I'd be able to give you. But I found a list that said "Read Knight's Castle next!" so that's what we're doing!