Related Clues:

• Sodium Pentothal alternative
• Interrogation aid
• Police polygraph
• Polygraph
• Inventor's undoing?
• Machine used to tell stories
• Device helping find truth
• Loitered, etc, shiftily - this could indicate a crime
• Truth-determining device
• Device that won't reveal anything for a soothsayer
• Device most valued when not giving true output?
• It may check someone's veracity
• Truth machine
• Perhaps interviewer's equipment: it works with electrode
• Forensic equipment that is spread about, held up by reader