The Hardy Brothers Detective Stories (Digest) - this series received a Digest addition so as not to confuse it with its predecessor, the original series, which officially bears the same name. It was first published in 1979 by the publishing house "Simon & Schuster" and existed for more than 25 years, until the beginning of 2005.

The publishing house "Top Secret" continues its "Children's Detective" series with the publication of a new series of stories by F. Dixon about adventures of the Hardy brothers. Now young detectives Frank and Joe are already operating in the present day. This time the brothers reveal the mystery of an unidentified flying object.