The fifth season of Slow Horses has come and gone, adapting another book in Mick Herron's successful Slough House series. This time around, it was the fifth book in the series, titled London Rules, with the season detailing how Jackson Lamb (Gary Oldman) and his Slough House crew are forced to go up against a terrorist group's coordinated attacks in the midst of an intense political campaign between two strongly divided mayoral candidates. Lamb must not only contend with the terrorists targeting Roddy Ho but also protect himself and Slough House from MI5 head Claude Whelan (James Callis), who wants to shut them down for good.

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