The Traitors Ireland Returns for Second Season at Slane Castle with New Twists and 23 Contestants
The second season of The Traitors Ireland made its debut on RTÉ One on Sunday night, with 23 contestants gathering at the atmospheric surroundings of Slane Castle in County Meath to compete in the social deduction game that drew an average of 557,000 viewers per episode in its first run — though early critical reaction to the opening episode has been mixed, with some reviewers finding the premiere underwhelming compared to the high expectations generated by the first series.
Background
The Traitors Ireland was one of the most talked-about television events of 2025, drawing large audiences to RTÉ One and generating the kind of water-cooler conversation that has become increasingly rare in the age of streaming fragmentation. The format — based on the Dutch original De Verraders — places a group of contestants in a castle setting where a small number of "Traitors" attempt to deceive the majority "Faithfuls" while the group collectively tries to identify and eliminate the Traitors through a series of missions and roundtable discussions.
The success of the first series was driven by a combination of factors: the compelling format, the quality of the casting, the atmospheric setting at Slane Castle, and the hosting of Siobhán McSweeney, whose dry wit and sharp intelligence proved perfectly suited to the demands of the role. The show also benefited from the global success of the Traitors format, which has been adapted in multiple countries including the United Kingdom, the United States, and Australia, generating a large and engaged international fanbase that was eager to see the Irish version.
RTÉ commissioned a second series on the strength of the first run's ratings, and the broadcaster has invested in expanding the production — introducing new gameplay elements and a fresh group of contestants — in an effort to maintain the momentum generated by the debut season.
Key Developments
The second series, which airs on Sunday, Monday, and Tuesday nights at 10:40pm on RTÉ One, features 23 contestants competing for a prize fund of up to €50,000. The format remains consistent with the first series, but RTÉ commissioning editor Teresa Smith has indicated that new twists and gameplay elements have been introduced to increase the stakes and to keep the audience guessing. The companion series, The Traitors Ireland: Uncloaked, hosted by comedian Kevin McGahern and filmed in RTÉ Limerick, returns alongside the main show, providing additional interviews and behind-the-scenes footage.
Early critical reaction to the opening episode has been cautious. The Irish Times described the premiere as "an underwhelming start to the new season", noting that the opening episode struggled to establish the same sense of intrigue and character that made the first series so compelling from the outset. However, critics have also noted that the first series took a few episodes to find its rhythm, and that the format's strengths — the paranoia, the alliances, the dramatic roundtable eliminations — tend to emerge more powerfully as the series progresses and the stakes become clearer.
Why It Matters
The Traitors Ireland matters for RTÉ as a demonstration that the national broadcaster can produce original Irish content that competes effectively with the international streaming platforms for audience attention. In an era when Netflix, Disney+, and other streaming services are investing billions in original content, the ability of a public broadcaster to create a show that generates genuine national conversation is increasingly valuable — both commercially and in terms of RTÉ's public service mandate.
The show also matters for the broader Irish television production sector. The Traitors Ireland is produced by Kite Entertainment, an Irish production company, and its success has provided a significant boost to the domestic production industry, creating employment for writers, directors, camera operators, and production staff across the country. The filming at Slane Castle has also generated economic activity for the local area in County Meath.
Local Impact
The return of The Traitors Ireland has been welcomed by the Irish television community as evidence of RTÉ's commitment to investing in original Irish programming. The show's success in its first series demonstrated that Irish audiences have an appetite for high-quality, locally produced entertainment that reflects Irish sensibilities and features Irish talent. The second series will be watched closely by the industry as an indicator of whether the format can sustain its appeal beyond the novelty of the first run — a challenge that many successful first-series shows have struggled to meet.
What's Next
The Traitors Ireland will air three episodes per week throughout September, with the finale expected in late September or early October. RTÉ has not yet confirmed whether a third series has been commissioned, but the broadcaster has indicated that the decision will be based on the ratings performance of the second run. For viewers, the coming weeks will bring the paranoia, the betrayals, and the dramatic roundtable eliminations that made the first series so compelling — and the hope is that the new twists introduced for the second season will add fresh dimensions to a format that has already proven its appeal to Irish audiences.
