The brand new Slough House thriller from the #1 bestseller Mick Herron

*Now an award-winning Apple TV+ series starring Gary Oldman, Kristin Scott Thomas and Jack Lowden*

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Old spies grow ridiculous, River. Old spies aren't much better than clowns.

Or so David Cartwright used to say, but he forgot to add they can be dangerous too, especially if they've fallen on hard times - as Diana Taverner learns when the past lands on her desk. An operation carried ou...