‘Treasure Island’ Episode 4 Recap and Ending Explained: Why Jim’s Memory Is the Only Thing Keeping Everyone Alive

Midpoint episodes of limited series usually have to do a lot of heavy lifting, and ‘Treasure Island‘ leans into that with its most daring departure from Robert Louis Stevenson’s novel so far. MGM+’s six-part adaptation, created by Robert Murphy, has been steadily turning a classic adventure into a darker, more political voyage. The ‘Treasure Island’ ending of “Chapter 4: San Domingue” flips the balance of power aboard the ship once again.

The episode aired on Sunday, November 1 on MGM+ in the US, with the UK following a day later on Paramount+. It follows a brutal third chapter in which Bess Hawkins (Hayley Atwell) was murdered and Long John Silver (David Oyelowo) was blamed and sentenced to death. It also confirmed to both Silver and the British agent Aaron Graham (Jack Huston) that the treasure map now lives only in Jim’s head.

The episode opens with a calculated choice from Jim Hawkins (Tom Sweet). Even though Silver is the obvious suspect in his mother’s death, Jim saves the pirate’s life because he still needs him. It’s a clear sign that Jim is making deliberate decisions instead of simply reacting to the adults around him.

That approach pays off quickly. Jim holds the only copy of the map, which makes him the most valuable person on the ship. Both Silver and Graham know it, and each wants to bend him toward their own goals.

Jim refuses to leave the ship until Graham tells him who he really is. Graham finally comes clean, explaining that he is on San Domingue to find and aid Makandal, the leader of the island’s enslaved people. The detour drops Jim into the middle of colonial power, politics and revolution, a setting that has little to do with treasure maps.

Things fall apart fast when Jim and Graham go to meet Makandal’s people. In the confusion, Silver is mistaken for Makandal himself. Jim, Graham and Silver escape by boat as San Domingue burns behind them.

The chaos hands Silver his opening. He rallies his crew, who are shown calling to save Jim Hawkins, and uses the unrest to take control of the ship. Graham’s plans collapse as Silver’s come together, and he is taken below deck as a prisoner.

Silver then demands that Jim hand over the map, but Jim has an ace up his sleeve. He negotiates a share of the treasure for himself and insists that Graham be kept alive. He also promises to reveal the true route only once they reach Skeleton Island, which means Silver can’t simply discard him.

The final beat is the ship setting course for Skeleton Island, but the power dynamic underneath is the real story. Silver may have the crew and the ship, but he can’t find the treasure without a teenager who has memorized the map. Jim has effectively turned his mother’s death and his own memory into leverage.

It’s also a notable shift in tone for the series, which has often kept Jim in the middle of other people’s schemes. Some viewers have felt he’s been sidelined by the added intrigue around Graham, so this episode gives him a firmer grip on his own story. Keeping Graham alive also hints that Jim doesn’t fully trust either man.

Reviewers and fans have noted that this episode takes the show’s biggest detour from the book yet. The Caribbean setting on the brink of revolution gives the story a historical charge that Stevenson’s original never had. Critical reaction to the series overall has been mixed, with Roger Ebert’s site criticizing its heavy tone while still praising Oyelowo’s performance for holding the ship together.

Audience reviews have echoed that praise, calling Oyelowo’s Silver a standout who blends charm and menace. They’ve also called Atwell’s Bess a fresh addition, which makes her absence in the second half all the more noticeable. The show now has to rely more heavily on the push and pull between Jim and Silver.

New trailer for ‘TREASURE ISLAND’ has been released. Starring David Oyelowo and Hayley Atwell. Premiering October 11 on MGM+. https://t.co/Sko1cr2vHD

— Nexus Point News (@NexusPointNews) September 24, 2026

Three episodes remain, and the pace is about to quicken. Chapter 5, “Skeleton Island,” arrives on November 8 and follows Jim as he leads the search for Captain Flint’s treasure, with the island’s history and an unexpected interruption threatening the plan. The finale, “A Princesa De Aveiro,” lands on November 15 and has Jim trying to stop Silver from escaping with the treasure as survivors form new alliances.

Given how much Jim has put on the line, the final stretch looks set to test whether his bargain was brilliant or reckless. With Graham locked below deck and Silver in command, nobody aboard is safe.

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