Updated October 12, 2026 | By Shivam Das
Looking for the full cast of MGM+’s Treasure Island, including the lesser-known supporting roles and what is known about the cast across all six episodes? The new adaptation of Robert Louis Stevenson’s adventure stars David Oyelowo, Hayley Atwell, Tom Sweet, Jack Huston and Tomer Capone. It also features Craige Els, Tristan Sturrock and Neil Pendleton in key supporting parts.
One important note: the network and major listings have confirmed the series’ principal and supporting cast, but they have not published a complete, episode-by-episode guest-cast breakdown for all six installments. This guide separates confirmed casting from details that have not been publicly verified, rather than guessing at unannounced roles.
Treasure Island (2026): confirmed cast at a glance
| Actor | Character | Why the role matters |
|---|---|---|
| Tom Sweet | Jim Hawkins | The teenage protagonist whose knowledge of the treasure map pulls him into the voyage. |
| Hayley Atwell | Bess Hawkins | Jim’s mother, given a much more prominent role in this reimagining. |
| David Oyelowo | Long John Silver | The charismatic, dangerous sailor whose loyalties are difficult to read. |
| Jack Huston | Aaron Graham | A polished but duplicitous British agent and revolutionary spy. |
| Tomer Capone | Billy Bones | The sea-worn sailor whose arrival sets the story’s danger in motion. |
| Craige Els | Mr. Arrow | A supporting character connected to the ship’s command structure. |
| Tristan Sturrock | Captain Smollett | The captain responsible for the voyage and its increasingly unstable crew. |
| Neil Pendleton | Mr. Cameron | A further named supporting role in the ensemble. |
The main five were named in the original series announcement, while Paramount+’s cast guide identifies Els, Sturrock and Pendleton in the additional roles above. See the Paramount+ series guide and the Playground Entertainment show page for official production information.
The five leads and their characters
Tom Sweet as Jim Hawkins
Sweet plays the young protagonist, whose discovery of a treasure map changes his future. The series frames Jim’s journey as a coming-of-age story: he begins as a sheltered teenager and is forced to make decisions in a world shaped by greed, manipulation and violence. The central question is not simply whether Jim can find the treasure, but what kind of person he becomes while pursuing it.
Hayley Atwell as Bess Hawkins
Atwell’s Bess is more than a background parent. She is described as resourceful and decisive, and her choices place her directly inside the struggle for control of the map and the voyage. That expanded role gives the series a second perspective on danger: Jim is learning how to survive, while Bess is actively negotiating with powerful men who may not be telling the truth.
David Oyelowo as Long John Silver
Oyelowo’s Silver is positioned as both charming and frightening—a survivor who can win trust while quietly calculating his next move. Silver is the story’s most recognizable pirate, but this version appears interested in his intelligence and contradictions as much as his menace. That makes him a crucial counterweight to Jim’s inexperience.
Jack Huston as Aaron Graham
Huston plays Aaron Graham, a British agent whose polished manner conceals a larger political agenda. The official synopsis describes him as a revolutionary spy seeking to use the treasure to challenge colonial power. His presence pushes the story beyond a straightforward hunt for gold and adds a contest over who will control its consequences.
Tomer Capone as Billy Bones
Capone plays Billy Bones, the troubled sailor whose arrival at the Admiral Benbow helps set the plot in motion. In a story built on secrets, Bones is an early warning that the treasure map brings danger along with opportunity.
The lesser-known cast: Mr. Arrow, Captain Smollett and Mr. Cameron
The supporting roles help make the Hispaniola feel like a working ship rather than a stage built only for the leads. Craige Els is credited as Mr. Arrow, Tristan Sturrock as Captain Smollett, and Neil Pendleton as Mr. Cameron. Captain Smollett’s role is especially important to the classic story because authority aboard the ship is constantly tested by competing loyalties. Mr. Arrow and Mr. Cameron add further layers to the shipboard ensemble.
These credits are confirmed, but public materials currently do not provide a verified list of every actor appearing in each episode. Some supporting characters may have brief appearances or may be listed differently across databases as episode credits are updated. For that reason, this article does not attach the eight confirmed performers to specific episodes without a reliable episode credit.
Cast and story across all six episodes
Treasure Island is a six-part drama, with new episodes scheduled weekly. The episode titles and summaries give a sense of how the ensemble’s roles develop, but they should not be mistaken for complete cast sheets.
- Episode 1 — “Chapter 1: The Admiral Benbow”: Jim and Bess encounter the treasure map and are drawn toward the voyage that will change their lives.
- Episode 2 — “Chapter 2: Great Britain”: Aboard the Hispaniola, Bess seeks Graham’s protection while Silver works to build support among the crew. A violent turn forces Jim to make a consequential choice.
- Episode 3 — “Chapter 3: The Wide Eternal Sea”: Alliances begin to fracture, and the tension between Bess, Graham, Silver and Jim escalates.
- Episode 4 — “Chapter 4: San Domingue”: Jim encounters the politics and upheaval surrounding San Domingue as control of the ship shifts.
- Episode 5 — “Chapter 5: Skeleton Island”: The search for the fortune reaches the island, where its history and the characters’ rivalries complicate the prize.
- Episode 6 — “Chapter 6: A Princesa De Aveiro”: The finale follows the struggle to outmaneuver Silver and the shifting alliances among the survivors.
Episode titles and synopsis details are listed in the Rotten Tomatoes season guide. The full guest-cast credits can change as episodes premiere and listings are updated, so check the episode’s end credits for the definitive appearance list.
Who created and produced the series?
Robert Murphy developed the television adaptation from Robert Louis Stevenson’s classic novel. The six-part series is produced by Playground Entertainment in association with Fifth Season, with MGM+ distributing it in the United States and Paramount+ in the United Kingdom and Ireland. Jeremy Lovering, William McGregor and Paul Walker are credited as directors; Mark Hedges is the producer.
For more coverage, read our Episode 1 ending analysis and our guide to Jim Hawkins’ photographic memory and the treasure map.
Frequently asked questions
Who plays Jim Hawkins in Treasure Island on MGM+?
Tom Sweet plays Jim Hawkins, the teenage protagonist at the center of the six-part adaptation.
Who plays Long John Silver?
David Oyelowo plays Long John Silver, the charismatic and dangerous sailor pursuing the treasure.
Who plays Bess Hawkins?
Hayley Atwell plays Bess Hawkins, Jim’s mother, whose role is expanded in this reimagining.
Who plays Aaron Graham?
Jack Huston plays Aaron Graham, a British agent and revolutionary spy.
Who plays Billy Bones?
Tomer Capone plays Billy Bones.
Who are the lesser-known cast members?
Confirmed supporting cast members include Craige Els as Mr. Arrow, Tristan Sturrock as Captain Smollett and Neil Pendleton as Mr. Cameron.
Is the complete cast for every episode available?
Not in a single verified public list at the time of this update. The principal cast and several supporting roles are confirmed, but episode-specific guest credits should be checked against each episode’s end credits or updated official listings.
How many episodes are in Treasure Island?
The first season consists of six episodes.
Editorial note: This cast guide is based on publicly available series and episode listings as of October 12, 2026. It will be updated when official episode-by-episode credits are released.
Sources: Paramount+ official series guide · Playground Entertainment · Rotten Tomatoes episode guide · TV Insider series preview
