This week, BBC Radio 4 begins a series of programmes on the life and work of Raymond Chandler.

His literary inspiration was the original hard-boiled detective novelist Dashiell Hammett and he once remarked: "Hammett gave murder back to the kind of people that commit it for reasons".

A long-lost short story by Hammett - So I Shot Him - has been discovered by Andrew Gulli, editor of the Strand Magazine, and is published for the first time this month.

He told Today's Justin Webb how he came across the work.

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