Related Clues:

• Spooky sign
• Comet, say, to the impressionable
• Meaningful sign
• Eucalyptus
• A sign of things to come
• Candy store buy
• Mess (up)
• Warning of a sort
• Trident, e.g.
• A comet, to the superstitious
• Bubble --
• Future sign
• Black cloud, e.g.
• Black cat, some think
• 1976 Gregory Peck film, with 'The'