Related Clues:

• Distress signal
• Smidgen
• Help wanted advertisement?
• This puzzle's theme
• 'Help!'
• 'Send help!'
• Letters of urgency
• Customs officer's concern
• Urgent call
• Kind of pad
• ..._ _ _...
• Brillo rival
• See 38-Across
• '___ Titanic' (1979 movie)
• 'Hel-l-l-lp!'