How many times have you heard the phrase, "You’re screaming like a banshee!"? I know I've said it often enough.
I never thought about it, though, until I saw an episode of the TV show Charmed, where one of the main female protagonists became a banshee. Charmed, in case you didn't know, was a long-running TV series about witches.
The show’s premise regarding the Banshee was that Phoebe, the witch in question, changed after her sister killed one of the creatures while under attack. As a witch, Phoebe couldn't be killed by the cries of a banshee--but because of her suffering and severe emotional pain, she could turn into one.