Possible Clues:

• Closet
• Confidential, not to be revealed
• It's not to be told
• About to enter religious school under wraps
• The untold story?
• Clandestine cult trapping endless prey
• Something you tell someone to keep private
• It may be under your hat
• With 55 Across, ''You Bet Your Life'' feature
• Under wraps, so to speak