Harry Guardino, a popular, hard-working character actor, starred in this half-hour action series as Montgomery Nash, an undercover government investigator who was called in whenever the nation's security was in question or the economy was being compromised from the likes of counterfeiters, forgers, smugglers, illegal alien criminals and the like. This series was one of the first series produced for first-run syndication in 1971 when the FCC mandated a half hour of prime time be returned to local channels for original and educational programming. That "original" and "educational" programming turned out to be series such as this one, a very cheaply made, pedestrian action series that retread every crime show cliche. Other quickly and cheaply produced series of the same vintage were series such as "Primus", "Dr. Simon Locke", "Police Surgeon" and others. Although Harry Guardino was always game and gave it his best effort, the paltry production values and mundane stories quickly sank the series. A low point for a very well-liked actor.