This children's lit book is about four brilliant children who pass a series of tests to do some undercover spy work to save the world. It reminds me of Lemony Snicket's, A Series of Unfortunate Events, but not so depressing. LOVED it. There are 2 more out and I haven't read them yet but they are on hold at the library.
The next book, I liked quite a bit. Reminded me of Gail Carson Levine's works. It is called Amaranth Enchantment.
It tells of a girl called Lucinda whose parents left for a ball and never came back. She is orphaned and through a series of events, meets and dances with a prince and then tries to steal from him. It's fun.
The last one is a bit of a dark take on the Rumpelstiltskin fairy tale. It is called A Curse Dark as Gold.
It is very losely based on the original story. There are an orphaned pair of sisters who own a mill that is cursed. The mill means everything and they are willing to sacrifice everything for it. It is more of a mystery, but has a dash of romance and magic.