Philbrick leads three lives: average citizen, Communist Party member and counter spy for the FBI. Tonight he is called to an important meeting at his local Communist cell. Main topic is how to bring about the downfall of the United States.

Philbrick fears his FBI connection has been discovered by his Communist comrades.

The FBI requests Philbrick's help to breakup a narcotics ring, whose aim is to gather secret defense plant information in exchange for free drugs. Philbrick's plan to film the illegal transactions from his office window hit a snag when he discovers a recently hired secretary is communist spy sent to keep an eye on his activities.

Philbrick is ordered by a communist leader to type up a list of non-card carrying communists from a coded document, but he suspects a trap.

Philbrick is ordered to write a leaflet that will trigger a wildcat strike at the local railroad yard.

Philbrick is assigned to supervise a program to recruit likely future communists at a local college, including the son of a prominent college donor.

As Educational Director of his district, Philbrick encourages his cell members to send literature to others abroad. A U.S. Army soldier finds himself in hot water when his elderly aunts, members of Philbrick's cell, send him microfilm along with the package of pamphlets.

Herb is given an assignment by a high party official to surreptitiously determine the level of loyalty and dedication of a party member who is being considered for a higher-level position within the party.

While stuffing envelopes with a fellow cell member, Philbrick learns that the communists have infiltrated a jet engine manufacturing plant that uses top secret production machinery and a shop steward is the head of the spy ring operating on the inside.

Philbrick receives a special assignment - pick up a man who has been smuggled into the country, obtain false credentials and introduce him to the Hollywood elite. The Communist administration hope that their agent can infiltrate the film and television industry.

The reds have a treacherous plot : they arrange a phony charitable organization that ostensibly allows people in America to donate to the relief of their destitute family members in Poland according to a menu of gift packages. They're wildly overcharged, so the communists get rich and a list those to persecute behind the iron curtain.

Philbrick is assisting George Reynolds with his election campaign for the U.S. Congress when he learns that one of Reynolds' primary contributors is giving the candidate money provided by the Communist party. As Reynolds is campaigning on an anti-communism platform it will be profoundly damaging to his chances when the information comes to light on the eve of the election.

To get out some secretly produced propaganda leaflets, the communists have Philbrick go through an elaborate cloak-and-dagger scheme to secure an offset printing press. It involves a new typewriter, the use of his car, and an eager printer in a hidden location.

Philbrick's marriage is threatened when the party demands that wife Eva becomes a member.

Comrade Ted directs Philbrick and other cell members to enrol with Civil Defense. The plan is to infiltrate and cripple the organization so that it will be unable to respond when the Communists launch an attack.

Philbrick has to race against time to prevent his cell from eliminating "Comrade Rick" whom they discover to be an undercover policeman.

The Evans Manufacturing Company has won a big defense contract with the US military. Philbrick discovers that fellow cell member Comrade Clyde has a job there. What is he up to?

Comrade Elaine instructs Philbrick to tour the city collecting assorted objects from secret contacts. The bits and pieces will be assembled into untraceable guns which the Communists will use on murder missions.

Communist special courier Comrade Neil tells Philbrick to liaise with a master passport forger. The party want an American citizen who has a wealth of secrets to slip out of the country and defect to the East.

Philbrick's cell members receive four city map references indicating locations of planned sabotage. Utilities, communications, industrial installations and military targets will all be hit unless Philbrick can tip off the FBI.

When the reds instruct Philbrick to find a public place for a meeting, he chooses a golf driving range because he assumed the spy was a golfer because of a pamphlet. It turns out the spy had no use for the sport, and the booklet was in fact a prototype destruction manual for commie agents.

A reluctant comrade is forced to film secret radar-tube designs.

Philbrick is raising funds for a new youth center. However, the comrades plan to infiltrate both the center and its bank account.

Philbrick's cell colleague Comrade Ormand claims to have a contact at the FBI who is about to supply a photo list of counter spies. Will Philbrick's name be on the list?

Rock Falls newspaper editor Larry Edwards is exposing Communist infiltration at an important power plant. The infiltrator disappears, so the party send Philbrick to Rock Falls to get back the secret plans

The FBI ask Philbrick to attend a secret meeting of the Communist policy committee. He manages to disunite the comrades on whether to continue with the phony peace initiative or else escalate their acts of violence.

Comrade John has a plan to cripple US communications systems by sabotaging radio stations. Philbrick must find a way to tip off the FBI.

Philbrick discovers that the comrades are planning to take over a labor union.

Philbrick tries to protect an important comrade who is called before a state committee.

Philbrick tries to protect an important comrade who is called before a state committee.