S03:E09 - A Witch's Calling

While Veronica remains missing, a coven of witches plot to destroy Challenger when their leader, Dame Alice, finds his science a threat to her sorcery. Her gorgeous student acolytes lure Roxton and Malone to the witch's castle while Alice herself face off with the "wizard" Challenger. Marguerite tries to warn Challenger against engaging with Dame Alice, but Challenger's curiosity gets the better of him. With the men seduced into lowering their guards, Marguerite must act quickly to save them.