Follow clues, solve puzzles, crack the code... find the missing millionaire.   The celebrated museums of the Fairfleet Institute are known for curating the mysteries of humanity. But they don’t solve mysteries. Luckily, twelve-year-old friends Alex Foster and Asha Singh of the A&A Detective Agency do. Or they will . . . once they get a real case to test their skills as sleuths.   When Dr. Alistair Fairfleet, the institute’s eccentric chairman, disappears on the first day of Alex and Asha’s summer vacation, they receive a letter written by the missing millionaire himself inviting...

 Follow clues, solve puzzles, crack the code... find the missing millionaire.   The celebrated museums of the Fairfleet Institute are known for curating the mysteries of humanity. But they don’t solve mysteries. Luckily, twelve-year-old friends Alex Foster and Asha Singh of the A&A Detective Agency do. Or they will . . . once they get a real case to test their skills as sleuths.   When Dr. Alistair Fairfleet, the institute’s eccentric chairman, disappears on the first day of Alex and Asha’s summer vacation, they receive a letter written by the missing millionaire himself inviting...