A compelling and funny new whodunit with a strong girl heroine-for fans of Book Scavenger, Greenglass House, and The Mysterious Benedict Society. Math whiz Alice Jones has already cracked a mystery or two. She's smart and she's fearless, so who else would her classmates turn to? But when a famous local scientist vanishes from a locked room, Alice and her detective skills graduate to the big leagues. Dr. Learner had been working on a top-secret invisibility suit that everyone wants. Rumor has it he's disappeared under suspicious circumstances ... literally. But is wacky science really behind his vanishing? Or is it something more sinister? Alice won't stop until she knows the truth ...The Impossible Clue is a middle-grade story whose appeal is no mystery, with a protagonist whose charm needs no magnifying glass to detect. From The Impossible Clue: Mr. Delgado smiled at me. A big, wide, patronizing smile. I looked him up and down, from his fancy haircut to his handmade shoes. He was the kind of man who was used to getting his own way. Part of me wanted to turn him down flat, just to see the look on his face. But I didn't. I had a better idea. "Fine," I said. "I'll help you look for Dr. Learner." I'd look for his missing scientist, and I'd find him too. No one uses me as a publicity stunt

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