"Phantom Treasure" by Harriet Pine Grove is an exciting adventure that will take you into a world of mysteries and secrets. The action unfolds in an ancient castle, where the main character, a young explorer, is looking for a mysterious treasure, about which the legend has been circulating for centuries. Will he be able to unravel the tangled web of riddles and find what has been hiding for so long within the mysterious walls of the castle? The book "Phantom Treasure" will not only interest you with its intense plot line, but will also leave you thinking about a mysterious world where reality is intertwined with fantasy for a long time after reading.