A look at the deadliest dynasties and how they came to, and then held on to, power. Witness Aggrippina's deadly recipes for success and Napoleon's needy sister, how the Lancastrians and the Yorkists came together (ish) for Love Day, how to stage a Russian coup, and how our royal family, the Windsors, came to change their family name to something a little 'less German'. Show less