Related Clues:

• Foreboding sign
• Prophet's reading
• Evangelist's imperative
• Gregory Peck horror flick (with "The")
• Rainbow, to some
• Good sign or bad sign
• Religious exhortation
• Hint of the future
• Broken mirror, say
• Be regretful
• Eerie clue
• Bad sign
• Advance warning
• Oracle's sign
• Red sky, maybe