Murder by the Invisibles

Inspector Duke Becker and the Special Investigations Unit, Homicide, team up with private investigator Bobby Green, who is adjusting to his medical retirement, on a complex case involving a frightened conductor. As they delve into the investigation, they confront a mad cult, a martial arts killer, and multiple victims across New York City. Alongside a new detective, Bing, a spiritual martial artist, they navigate the dangerous underground and city streets in their pursuit of justice.