In *Holmes & Watson Adventures*, Sherlock Holmes and Dr. Watson investigate the mysterious disappearance of Lord Edwin Thorne, who vanishes from a locked room the night before inheriting his family fortune. As they unravel hidden secrets within the Thorne family, suspicion falls on the anxious Lady Thorne and the envious half-brother. With sharp deduction and clever insight, Holmes is determined to uncover the truth before the night is over.