The news was revealed as the streamer released a first-look trailer for the new season, which ends with River being shocked by Sid's return.
Now, five seasons later, it has seemingly been confirmed that was the case. You can watch the full trailer for season 6, which is based on Herron's books Joe Country and Slough House, right here now.
View oEmbed on the source websiteWe also get a glimpse of Paul Higgins, apparently back as his season 1 character, Struan Loy.
The new season will premiere globally on Wednesday 16 September, with episodes being released weekly from that point until 21 October 2026.
View Green Video on the source websiteCooke's return and the choice to adapt two books rather than one aren't the only noteworthy factors at play in this season, as it is also the first without showrunner Will Smith. His departure was announced last year, with Gaby Chiappe acting as showrunner this time around.
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