From ancient Egypt to the Tudors to the Nazis, the film industry has often defined how we think of the past. But how much of what you see on the screen is true? And does it really matter if filmmakers just make it all up? Picking her way through Hollywood's version of events, acclaimed historian Alex von Tunzelmann sorts the fact from the fiction. Along the way, we meet all our favorite historical characters, on screen and in real life: from Cleopatra...