When a series of articles are published, insinuating police corruption amongst the various precincts of the NYPD, Lt. Scanlon brings a lie detector to the squad room to root out the dirty detectives. Meanwhile, Barney suspects a fur dealer's robbery report isn't truthful.

A wife arrives at the twelfth precinct, looking for the detectives help in talking her husband out of becoming a soldier of fortune. Meanwhile, Wojo and his girlfriend Nancy take a big step and move in together, resulting in him starting to have second thoughts about it.