On 27th July 1890 a gaunt figure stumbled down a drowsy high street at twilight in the small French country town of Auvers. The man was carrying nothing; his hands clasped to a fresh bullet wound leaking blood from his belly. This was Vincent van Gogh, then a little known artist; now the most famous artist in the world. His tragic death has long been known, what has remained a mystery is how and why he came to be shot. 'Loving Vincent' tells that story.