Possible Clues:

• Awful experience with dark horse
• Black horse in bad dream
• Dark horse, frightful prospect
• “You’ve had a cream of a ____ dream” (Sweeney Agonistes, TS Eliot)
• 'Incubus' is the dark horse
• Dark horse's very unpleasant experience
• Almost tense horse gives you bad thoughts when out
• Horrific experience in Black Sea for Caesar
• What '17' might ne�er have mentioned to psychiatrist?
• Dark horse that poses threat to rest