Related Clues:

• See 35-Across
• See 22 Across
• They're often raised
• See 17 Down
• What may be asked of quiet sons
• See 26
• See 8
• Search is getting on inside -- things to be discussed
• Deduction game
• Exam parts to answer
• Missions orbiting Io – new doubts
• Expresses doubt about abnormally quiet sons