Tiara Friends – The Mystery of the Lake Monster (Scholastic Inc.)

Meet lookalike besties Millie and Jessie. One is a princess and one is a maid–but now they’re both turning detective! A monster has been spotted in the lake at Peveril Palace. It only appears in the dead of night. Can the girls sneak out under cover of darkness, hunt for clues and track it down? It won’t be easy, but they have one BIG advantage: when they swap places, nobody can tell them apart…