Furies (legend)

The Furies were a myth or legend in nearly every civilised culture including planets such as Sontar, Draconia, and Earth.

Madame Kovarian told Melody Pond and Brooke terrifying bedtime stories about them when they were children. According to Kovarian's version of the legend, the Furies had powers to rectify any problem in the world by laying a grievance at their feet and punishing a guilty person to death. Kovarian believed the legend was a good foundation to teach Melody about why she needed to kill the Doctor. (AUDIO: The Furies)