Witch Week (BBC) (only audio)

At Larwood House, a school for witch-orphans, witchcraft is utterly forbidden. So when a note is found declaring that someone in class 2Y is a witch the rumour-mill goes into overdrive.

So, when the son of history teacher Mr. Wentworth disappears and a note is found signed by the mysterious Witch of 2Y, the dreaded Inquistors are called to investigate.