Castle Skull was once owned by the monstrous magician Maleger, and then, on Maleger's mysterious death, by the famed actor Myron Alison. A peaceful night at Myron's home across the river is disturbed by the sound of screams. The house-guests look up to see a burning body dancing on the battlements of the castle - as Myron spends his final moments in agony. Summoned by financier Jérôme D'Aunay to investigate, Henri Bencolin and Jeff Marle soon find themselves in collaboration - or perhaps in…