25 best conspiracy movies ever

As Britain starts its annual celebration of foiling the Gunpowder Plot, we take a look at the best celluloid conspiracies. Or are they?

The 39 Steps (1935)

Alfred Hitchcock's adaptation of the classic John Buchan's thriller pits everyman Richard Hannay against the titular spy ring – a sinister group smuggling military secrets out of Britain. Even after all this time, Hitchcock's first stab at depicting an innocent man on the run is marvellously tense.

More after the break...

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