Murder: The team looks at three of history's most mysterious murders, including the Princes in the Tower, the death of Attila the Hun and the mafia-style hit on Juan Borgia. (2 of 6)
Monsters: Joe and Suzannah investigate some of history's greatest characters, including how a Hungarian widow who bathed in blood came to be known as the Countess of Dracula. (3 of 6)
Dark Arts: Joe and Suzannah delve into Europe's creepy cases of witch hunts and devil worshippers, also asking whether gravediggers started the plague with powders made from corpses.
Executions: Historian Dr Suzannah Lipscomb and presenter Joe Crowley challenge what we know about Europe's blood-soaked history, beginning with some of its most infamous executions.
Avengers: Joe and Susannah delve into some of history's greatest acts of revenge, asking who killed Mussolini and how an attack on Napoleon helped to shape his political career.
Tyrants: Historian Dr Suzannah Lipscomb and presenter Joe Crowley investigate the terrible deeds of history's most infamous tyrants, including Emperor Nero and Vlad the Impaler.