The Princess in Black and her friends make a splash in the third boxed set of adventures from the New York Times best-selling series. In this princess-power-packed trio of books, the Goat Avenger helps vanquish a monstrous stink, the Sparkle Signal is used to call for help from the Princess in Black's heroic friends, and a new mermaid friend help puts a stop to a big blue kraken's shenanigans. Funny, exciting, and full of action, these early chapter books continue to be a hit with young readers. Included are: The Princess in Black and the Bathtime BattleThe Princess in Black and the Giant ProblemThe Princess in Black and the Mermaid Princess