Enola Holmes 3

In Malta, Enola Holmes and Lord Tewkesbury have arrived for their wedding. The ceremony is being held there because Tewkesbury’s late father served in Malta during the British occupation, and his mother believes it is the most meaningful place for the family. Sherlock attends but is openly against the marriage, believing Enola is sacrificing her independence to become a Lady. Enola insists she can be both a wife and a detective.

Meanwhile, Sherlock is secretly working on another case. Before he can explain it to Enola, he disappears. At the same time, a dying Maltese soldier mutters what sounds like “wrath.” Enola later deduces he actually said “Rathe,” the surname of someone important. The soldier had been searching for Professor Adeline Rathe, believing she supported Maltese independence from Britain. Searching Sherlock’s room, Enola finds a torn piece of an expensive woman’s dress. She tracks the woman through Valletta, but before she can question her, the woman is shot by a sniper. As she dies, she warns Enola, “She will kill you.” Enola pursues the assassin but loses him.

Enola discovers the “she” is actually Professor Moriarty, who escaped at the end of the second film and is now living under the alias Professor Adeline Rathe. Moriarty has deliberately created the Rathe identity to manipulate everyone involved. While Enola investigates, Sherlock is revealed to be imprisoned alongside Tewkesbury’s mother. Moriarty explains she arranged almost everything over the previous year, including influencing Lady Tewkesbury into choosing Malta for the wedding, because she wanted Enola to come there. Sherlock’s kidnapping is simply bait to lure Enola into solving the puzzle for her. She teams up with Dr. John Watson, who has recently entered Sherlock's life, and Maltese freedom fighter Mikiel. Their investigation uncovers a conspiracy dating back to the Battle of Khost in Afghanistan. During the war, British officers stole a vast quantity of Afghan gold and secretly transported it to Malta. Tewkesbury’s father had been involved in transporting the treasure, and his war medals become one of the crucial clues.

Enola realises a masked man wearing identical medals is actually the Brigadier, Tewkesbury's godfather and his father’s closest military friend. The Brigadier, the British governor and several senior officers all helped cover up the theft of the Afghan gold for decades. Following Sherlock’s coded clues, Enola locates the hidden cave containing the treasure chest. She knows Moriarty has manipulated her into finding it and expects an ambush. As soon as she retrieves the chest, Moriarty’s hired Maltese soldiers surround Enola and Watson. Fortunately, Tewkesbury and Mikiel arrive with Maltese rebels, allowing Enola to escape with the gold. Moriarty flees on horseback, leading Enola to the location where Sherlock and Lady Tewkesbury are tied up. During the fight, Enola overpowers Moriarty while Sherlock—after enduring torture—is tempted to kill her. Enola persuades him not to become a murderer, and together they arrest Moriarty instead.

With the conspiracy exposed, the Brigadier confesses his role in stealing the Afghan gold. He and the other corrupt British officers are arrested and imprisoned. Rather than allowing Britain to keep the treasure, Enola and Sherlock ensure it is returned to Afghanistan, acknowledging that it never belonged to Britain. Mikiel believes the scandal will strengthen Malta’s campaign for independence. After the case is over, Sherlock apologises to Enola for doubting her. The siblings reconcile, and Sherlock finally accepts that she has become his equal as a detective. Deeply disturbed by learning of his father’s involvement in British imperial crimes, Tewkesbury renounces his aristocratic title and seat in the House of Lords. He abandons the name “Lord Tewkesbury” and chooses to live under his birth name, Earnest Tebbity-Gore. Enola decides to remain Enola Holmes, keeping her own identity after marriage. They finally marry in a small ceremony officiated by Eudoria Holmes.