Related Clues:

• Catch wind of
• Insect
• Sense, in a way
• Undercover sort
• Mole
• Get the message
• Tail, maybe
• Sight
• Kind of glass
• Austin Powers, e.g
• Cloak-and-dagger type
• Start of "The Midnight Ride of Paul Revere"
• Informal conversation opener
• Wire wearer
• Hale, for one