In a small town, history is about to repeat itself. Four girls - Rebecca, Jin, Meera and Louise - form a club without realizing they are re-tracing the steps of adventurers before them.
This is just the beginning of exciting adventures full of mysterious clues and secret maps. Can they decipher the riddle of the engraved medallion? Who is the invisible “host” that visits the clubhouse after dark, preparing it for their meetings? Is it the ghost of Louise’s great-aunt - the one who gave her the four powerful rings? What about the club records, dating from what seems like centuries ago? All are beautifully inscribed in the ancient book known as the Treasury of Knowledge.
Source: Author's Blurb