El misterio de Lord Lucan (2013)

Belgravia, London, November 7th, 1974. Sandra Rivett, nanny of the aristocratic Lucan family, is found beaten to death. Shortly thereafter, the prime suspect, John Bingham, 7th Earl of Lucan, mysteriously disappears. When the manhunt begins, the subsequent scandal shakes the foundations of the British ruling class like never before.