After examining the French artist Paul Gauguin’s The Little Cat with X-ray imaging, experts at the Van Gogh Museum in Amsterdam are unraveling the painting’s secrets—including a hidden beetle.

With her book, "The Case of the Disappearing Gauguin," Stephanie A. Brown looks at whether a painting at a Northern ...

One caveat. Many of Gauguin’s most celebrated canvases are too fragile to travel. The show includes enough compelling, well-known paintings, but its strength is in less familiar works ...