In this documentary marking Burns Day, writer Andrew O'Hagan goes in search of the poet who inspired Robert Burns - Robert Fergusson. Fergusson died young, but his legacy was a love song to his native city, Edinburgh. Andrew tracks down his story in the streets and wynds of the Old Town. Fergusson's vivid use of Scots led Burns to declare him his 'forgotten hero' and to pay a lasting tribute to this neglected Scottish poet.