Last week on BBC 4 there was a documentary " The Pendle Witch Child" presented by poet Simon Armitage, based around Jennet Device the child who testified against her family who were subsequently executed as witches. Aside from some rather annoying animations depicting some of the historical characters it's a great overview of the Pendle Witches and the trials socio-political implications as well as Jennet's own demise. IT also singles out the first forensic investigation into a witch trial, where science and superstition collide.
Plus it features Ronald Hutton on more than one occasion which is always an absolute joy! For further reading here's a great interview with him.