Related Clues:

• Abnormal
• Spanking follower?
• 'The X-Files' extra
• Hard to explain
• Extrater-restrial
• It's out of this world
• Debuting on the market
• Just arrived
• Visitor to Earth
• Fictional work
• Like some bedfellows
• Hallowe'en extraterrestrial
• Film source, sometimes
• Not the norm
• Feature of many sci-fi films