The Traitors Ireland Returns to RTÉ on 30 August with Siobhán McSweeney Back at Slane Castle for Season Two
The Traitors Ireland returns to RTÉ One on Sunday, 30 August, with Siobhán McSweeney back as host for a second series filmed at the atmospheric Slane Castle in Co. Meath — a return that RTÉ is billing as its biggest entertainment launch of the autumn season, following a first series that averaged 557,000 viewers per episode and peaked at 732,000 for the finale.
Background
The Traitors Ireland premiered on RTÉ One on 31 August 2025, and its success exceeded even the most optimistic projections. The format — adapted from the Dutch original and developed internationally by Studio Lambert — places a group of contestants in a dramatic setting, dividing them into "Faithfuls" and "Traitors." The Traitors must eliminate Faithfuls without being detected, while the Faithfuls must identify and banish the Traitors to secure a prize fund of up to €50,000. The combination of social deduction, psychological tension, and the spectacular setting of Slane Castle proved irresistible to Irish audiences.
The first series was produced by Kite Entertainment, the Dublin-based production company that has been responsible for some of RTÉ's most successful recent commissions. The choice of Slane Castle — the historic Co. Meath estate that is better known internationally as the venue for major rock concerts — as the filming location gave the Irish version a distinctive character that set it apart from its British and American counterparts. The castle's Gothic architecture, its sweeping grounds, and its atmospheric interiors provided a perfect backdrop for the show's blend of intrigue and drama.
The first series produced several memorable moments and a breakout star in Paudie Moloney, whose strategic brilliance and charismatic screen presence made him one of the most talked-about figures in Irish television in 2025. The series was won by Kelley Higgins, Oyin Adeyemi, and Vanessa Ogbonna — a result that was celebrated as a victory for the Faithfuls and provided a satisfying conclusion to a series that had kept audiences guessing throughout.
Key Developments
RTÉ announced the return date for The Traitors Ireland on 7 August, confirming that the second series will premiere on RTÉ One and the RTÉ Player on Sunday, 30 August. Siobhán McSweeney — the Cork-born actress best known internationally for her role as Sister Michael in Derry Girls — returns as host, bringing the dry wit and sharp intelligence that made her such an effective presence in the first series. The companion show, The Traitors Ireland Uncloaked, hosted by comedian Kevin McGahern, will also return, airing immediately after each episode of the main series.
The second series promises new gameplay twists and a fresh group of contestants, with Kite Entertainment having worked to develop the format in response to audience feedback from the first series. While specific details of the new twists have been kept under wraps, RTÉ has indicated that the second series will be "bigger, bolder, and more unpredictable" than the first — a claim that will be tested when the show premieres at the end of the month.
The production was filmed at Slane Castle earlier this year, with the estate once again providing the dramatic setting that proved so effective in the first series. The castle's owners, the Conyngham family, have spoken warmly of the production's impact on the estate and the local area, noting that the show has significantly increased interest in Slane Castle as a visitor destination.
Why It Matters
The return of The Traitors Ireland matters for several reasons. Most immediately, it represents one of the most significant entertainment events in the Irish television calendar — a show that has demonstrated the ability to generate the kind of water-cooler conversation and social media engagement that is increasingly rare in a fragmented media landscape. For RTÉ, which has faced significant challenges in recent years — including funding pressures, audience fragmentation, and competition from streaming platforms — the success of The Traitors Ireland is a demonstration that Irish public broadcasting can still produce content that captures the national imagination.
The show also matters as an example of the quality of Irish television production. Kite Entertainment's work on The Traitors Ireland has been widely praised, and the show has attracted international attention as one of the most successful national adaptations of the format. The success of Irish-produced content on the international stage — from Normal People to Derry Girls to The Traitors Ireland — is an important part of Ireland's cultural soft power and its ability to attract investment in the screen industries.
Local Impact
The filming of The Traitors Ireland at Slane Castle has had a significant positive impact on the local economy in Co. Meath. The production employs a large crew of Irish technicians, designers, and support staff, and the presence of the production at the castle generates business for local accommodation providers, caterers, and suppliers. The show's success has also increased tourism interest in Slane Castle and the surrounding area, with visitors from across Ireland and internationally making the trip to see the location that has become synonymous with one of the country's most popular television programmes. For the village of Slane itself — which is better known as the location of the famous outdoor concerts at the castle — the association with The Traitors Ireland has added a new dimension to its cultural identity.
What's Next
The Traitors Ireland Season Two premieres on RTÉ One and the RTÉ Player on Sunday, 30 August, at 9:30pm. The Traitors Ireland Uncloaked, hosted by Kevin McGahern, will follow immediately after each episode. The full series schedule has not yet been announced, but the first series ran for eight episodes over eight weeks. RTÉ has indicated that it is already in discussions with Kite Entertainment about a potential third series, reflecting the confidence that both parties have in the format's continued appeal to Irish audiences.
