By Stephen Sharkey.
17th-century German astronomer Johannes Kepler is appalled when his loud and annoying mother is accused of witchcraft.
He has to defend her while trying not to get so wound up that he kills her himself.
Johannes Kepler....Simon Treves
Kepler's Mum....Ann Beach
Heinrich Kepler....Ben Crowe
Christoph Kepler....John Dougall
Ursula Reinbold....Susan Jameson
Vice Chancellor....Peter Marinker.