Judas is the cover name of Martin Bormann, now a terrorist and master spy with whom Carter has fought several times previously (see Run, Spy, Run; The China Doll; Fraulein Spy, Web of Spies, Danger Key). Hakim discovers copies of the pre- and post-cosmetic surgery photos of the 9 suspects. Carter and Julia go to Montreal to trace suspects matching the description of these men. Carter breaks into the headquarters of a secretive group and discovers one of the nine communicating with operatives around the country via Morse code transmitter. Carter incapacitates the man and discovers the location of two of the operatives in Little Rock, Arkansas and Norfolk, Virginia. The saboteurs are using sophisticated projectors to simulate UFOs and various concentrated chemicals to trigger smog, tainted water and other forms of pollution to cause mass hysteria and civil unrest. Carter and Julia return to New York. Carter uses a helicopter – equipped with Geiger counters – to search for the missing radioactive material. He finds it at an abandoned boating house on the shore of Lake Erie near Buffalo, New York. Carter kills the last four Chinese spies as they wait for final instructions from Judas. Judas suspects a trap and escapes by boat across Lake Erie into Canada. Tracing a power surge to the Niagara Falls area, Carter flies by helicopter to investigate. Carter intercepts Judas at the Falls and chases him through the spray. Carter shoots Judas and sees him fall into the water near the Cave of the Winds. Judas is swept away but his body is not found. Under interrogation, one of the 9 spies reveals that Judas and a Chinese General planned the operation to demoralize the population with pollution scares, radiation sickness and power outages; to be followed by a massive power cut and an invasion of the US accompanied by an unspecified secret weapon. The plot has been foiled and everyone suspects Judas has been killed; Carter remains uncertain.