Fergus Hume's 'The Harlequin Opal' is a Gothic classic that delves into a world of mystery, suspense, and romance. Set against the backdrop of a remote English estate, the novel follows the sinister events surrounding a rare and valuable opal, believed to bring both fortune and tragedy to its possessors. Hume's atmospheric prose and intricate plot twists immerse readers in a gripping narrative tha...