When their friend Sam gets a letter full of riddles from an eccentric millionaire, the Aldens are eager to help him crack the code. If Sam can solve the puzzle, he will inherit the millionaire's money! But Sam isn't the only one in town to receive a letter - and whoever solves the mystery first will win the prize!
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"These are great listens for the car. My boys would call out their thoughts occasionally about the mystery, trying to solve it."
— Katie (4 out of 5 stars)
" great. definitely a good buy "
— 1/31/2019" In this book the Aldens friend's dad died and he has gotten a mystery and gives it to the Aldens to find out. "
— Mrs., 4/1/2013" This was one of the stupider BC mysteries. "
— Brooke, 3/3/2013Gertrude Warner (1890–1979) was born in Putnam, Connecticut. From the age of five, she dreamed of becoming an author. She wrote stories for her grandfather and each Christmas she gave him one as a gift. She went on to be a teacher for more than thirty years and was inspired to write easy and fun-to-read books for children in a time when there were few. Warner is best remembered as the author of the Boxcar Children mysteries.
Aimee Lilly is an AudioFile Earphones Award–winning narrator who has been involved in the broadcasting and radio drama field since 1989. She has read audiobooks by many bestselling authors, including Elizabeth George, Janette Oke, and Francine Rivers.