Raven is released on probation to live with Professor Young, an archaeologist immersed in research into Arthurian legend. He is compelled to fight a plan to build a nuclear plant on the research site, which holds many mysteries.

• Michael Aldridge
• Patsy Rowlands
• Phil Daniels
• Shirley Cheriton
• Tenniel Evans
• Blake Butler
• Ellis Jones
• James Kerry