<I>The Greatest English Detective Club #1</I> tells the story of stolen money and gold from an old exhibit hall which holds the history of diving and local shipwrecks and ultimately how a young brother and sister solve it. For Phil Marsden an eleven year old boy his one and only mission is to solve mysteries like his mum who is both a history professor at Southampton University and a psychic who helps the Weymouth England police on certain cases. For Kate Marsden a ten year old girl she desperately wants to keep up with her brother not only to help him solve mysteries but also to follow in her mum's footsteps.</p>