In 'Sherlock Holmes: the Enigma of Archibald Sinclair,' the legendary detective, Sherlock Holmes, and his loyal companion, Dr. John Watson, are drawn into a baffling case when a seemingly insignificant disappearance reveals a web of secrets, intrigues, and danger lurking in the shadows of Victorian London. As they unravel the enigma of Mr. Archibald Sinclair's vanishing, they soon find themselves on a perilous journey that will test Holmes's brilliant mind to its limits and lead them into a world of unexpected twists and perilous revelations.