The Impossible Clue by Sarah Rubin

Sarah Rubin’s The Impossible Clue is a clever middle-grade mystery filled with science, sleuthing, and a dash of humor—perfect for fans of Nancy Drew and The Mysterious Benedict Society.
 
Meet Alice Jones, budding detective. She’s more comfortable solving equations than cracking cases, but when a famous scientist disappears—leaving behind a mysterious clue—Alice is thrown into the middle of a puzzle even she might not be able to solve. With rumors of an “invisibility suit” and suspects all around, Alice must use her logic, problem-solving skills, and bravery to crack the impossible case.
 
This engaging novel blends STEM concepts with detective storytelling, making it both entertaining and educational for curious middle-grade readers.