"The Secret of the Gold Coin" is a fascinating English book written by the author Helen Wells. This exciting novel combines unparalleled intrigue with a dynamic and unpredictable plot. The main characters are two young detectives who solve the most complicated mysteries. During the investigation, they find themselves in wave trials, but thanks to their intelligence and ingenuity, they find the key to the solution. "The Secret of the Golden Coin" is a book that will not leave any detective lover indifferent and will bring many unforgettable impressions.