Related Clues:

• Indication of doom
• Cold period
• Words from a blackmailer
• Time bomb, say
• Season
• Ultimatum, for example
• Thug's message
• Bully's remark
• Impending danger
• Blackmail tactic
• Menacing words
• It might be idle
• Endangerment
• Menacing statement
• One of the Four Seasons