Young Cam Jansen and the Ice Skate Mystery, Paperback by Adler, David A.; Natti, Susanna (ILT), ISBN 0141300124, ISBN-13 9780141300122, Like New Used, Free shipping in the US

Having lost the key to their locker, Eric and Cam must find the key before their parents discover it is gone, in an early reader storybook that features short sentences, repetition, and plenty of clues. Reprint.