Related Clues:

• Gregory Peck horror flick (with "The")
• Rainbow, to some
• Good sign or bad sign
• Doublemint, e.g.
• Hint of the future
• Broken mirror, say
• Eerie clue
• Bad sign
• See 108-Across
• Advance warning
• Oracle's sign
• Red sky, maybe
• Herald
• Sign for a seeress
• Koala's tree