Van Gogh in the asylum. Plus, Christian Marclay on The Clock

We speak to our long-standing correspondent and expert on Van Gogh Martin Bailey on his new book, which tells the story of the artist’s life at the asylum at Saint-Paul-de-Mausole in Provence, southern France. He is joined by the art historian Martin Gayford, author of the Yellow House, a book on Van Gogh’s time in Arles. Later, Christian Marclay tells us about his ground-breaking work The Clock returns to London where it was created eight years ago.