Related Clues:

• What nyctophobes fear
• Out, as a candle
• Like a moonless night
• Not currently in use, as a theater
• Murky
• Not illuminated
• Sombre
• Not yet glowing, as a candle
• Dusky
• With 28-Across, a Hogwarts class
• Lacking light
• Sunset
• Pitch black
• Like a pitch-black room
• With 54-Across, black magic