Related Clues:

• Curious sort
• Do detective work
• Emulate Nero Wolfe
• Spy
• Pry
• Be nosy
• Meddlesome sort
• Poke around
• Inquisitive one
• Butt in
• One with an interest in your business
• Nose around
• Yenta
• Paparazzo sort
• Peek in someone's medicine cabinet, perhaps