Strange story that you may not know..

The comedy thriller, Bulldog Jack, was made in 1935 which included a secret (fictitious) tunnel from the station to the Egyptian room at the Museum. The station in the film was called 'Bloomsbury', and in all likelihood was a stage set, but it was based on the ghost story of British Museum.

On the same night that the film was released, two women disappeared from the platform at Holborn - the next station along from where British Museum was. Marks were later found on the walls of the closed station. More sightings of the ghost were reported along with strange moanings from the walls of the tunnels. Eventually the story was hushed up as London Underground has always denied the existence of the tunnel from the station to the Egyptian Room.

(from bbc.co.uk's website )

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