Accomplice, in law, a person who takes part with another in a crime either as a principal or as an accessory. In a criminal trial the general rule is that a defendant cannot be convicted on the unsupported testimony of an accomplice.
Think you're a good liar? A polygraph might disagree. By monitoring a few physiological signs, these machines know if you're being deceptive, even if you don't have a "tell."
Public enemies threaten the well-being of the populace, committing serial murders, genocide or financial piracy. What 10 public enemies make our list?