Olivia Cooke Makes a Surprise Return in the Trailer for Slow Horses Season 6

Apple TV released the archetypal trailer for Season 6 of its spy bid Slow Horses, and tacked connected the precise extremity was the shocking (I gasped) instrumentality of Sidonie Baker, played by House of the Dragon’s Olivia Cooke.

Cooke had a short-lived but beloved stint arsenic Sid during Slow Horses’ premiere play successful April 2022. (House of the Dragon Season 1 came retired a fewer months later, successful August.) No spoilers, but her exit was… dramatic! Still, her arc ne'er had steadfast closure, and fans person been speculating astir (and begging for) Sid’s instrumentality each play since. Viewers who also person work the root material, Mick Herron’s Slough House bid of novels, knew that we’d conscionable person to thrust it retired until the TV amusement caught up.

The caller trailer kicks disconnected with a bid staple successful a tete-a-tete betwixt Gary Oldman’s curmudgeonly Jackson Lamb, who looks aft the home-for-remedial-MI6-spies Slough House, and Kristin Scott Thomas’s Diana Taverner, the existent caput of MI6. It seems that the Slow Horses are the targets for the atrocious guys — 1 of whom is played by Andor’s Most Annoying Boy (complimentary) Kyle Soller — and Lamb attempts to herd the existent unit and alumni of Slough House similar cats to support them each from getting murdered.

The trailer besides highlights the invited instrumentality of Louisa Guy, played by Rosalind Eleazar, aft she promised she was leaving the espionage concern wholly astatine the commencement of Season 5, and different showdown betwixt River Cartwright (Jack Lowden, who mightiness beryllium promoted to Good Spy arsenic he’s being eyed to beryllium the caller Bond) and his horrible, evil father, Frank Harkness (a peculiarly spooky Hugo Weaving).

Watch the trailer below:

Not everyone volition marque it retired of Slough House alive.#SlowHorses Season 6 premieres September 16. pic.twitter.com/uznKQ0VSAE

Slow Horses has been cranking retired seasons tv yearly since it premiered — with the objection of Season 2, which came retired less than a year aft Season 1. That’s old-school TV! Season 6 volition accommodate 2 books successful Herron’s series, Joe Country and Slough House, alternatively of the emblematic one. Season 7 has already been greenlit. The archetypal occurrence of Slow Horses Season 6 comes retired September 16 connected Apple TV with caller episodes airing weekly.

Leanne Butkovic (she/they) is an Editorial Project Manager astatine IGN, wherever they've besides written astir TV, movies, and games.