When King Boris III of Bulgaria dies amid mysterious circumstances during World War II, there's no shortage of suspects. But eighty years later, his death remains unsolved. Award-winning journalist Becky Milligan follows a trail of dissidents, poisoners, soldiers and spies to unravel eighty years of lies and cover-ups. This tragic family saga of a doomed royal dynasty is a story of treachery, deceit and a quest for the truth. Who killed the Butterfly King? The Butterfly King is a podcast from Exactly Right, produced by Blanchard House.