"WHEN ADVENTUROUS DETECTIVES, CASS, AN EVER-VIGILANT SURVIVALIST, AND MAX-ERNEST, A BOY DRIVEN BY LOGIC, DISCOVER THE SYMPHONY OF SMELLS, A BOX FILLED WITH SMELLY VIALS OF COLORFUL INGREDIENTS, THEY ACCIDENTALLY STUMBLE UPON A MYSTERY SURROUNDING A DEAD MAGICIAN'S HIDDEN DIARY AND THE HUNT FOR IMMORTALITY. FILLED WITH WORD GAMES, ANAGRAMS, AND FEATURING A MYSTERIOUS NARRATOR, THIS IS A BOOK THAT WON'T STAY SECRET FOR LONG."