Meet Sherlock Bones and his trusted companion, Dr. Catson--and join them on a fun math multiplication adventure! This activity storybook has a cool "reveal feature" with a magnifying device.

Evil Professor Moriratty is up to no good again--but kids can use their multiplication skills to help Sherlock and Dr. Catson track down their archenemy. They'll earn medals as they decode Moriratty's note; count how many of Moriratty's henchmen have teamed up in terrifying trios; figure out which criminal a paw print belongs to; and discover which ship Moriratty fled on.