Black Castle is one of those quaint 15 minute series that epitomizes the charm of old time radio horror. It had organ accompaniment, and some other simple sound effects, but it was really the sheer will-power and charisma of the voice actor who carried it off. Don Douglas played all the roles, including the Wizard host, complete with his trademark insane laughter. To jump from one character's voice to another was no easy task, especially when the Wizard would suddenly interrupt the action to laugh hysterically and narrate the story in greater detail.