An investigation into government checks stolen from mailboxes leads the T-men to a couple who turn to forging disability compensation checks.

A young Federal agent infiltrates a gang of bootleggers whose still is on board a freighter ship.

As part of his settlement with the IRS, a tax cheat agrees to pay all the money he owes within ten days. However, a suspicious IRS agent believes that the man is going to pay his taxes with yet more money that he has illegally hidden from the government, and sets out to prove his case.

Some ingenious convicts working in a prison's print shop have begun a counterfeiting operation. The shop's foreman is deliberately looking the other way because he's up for parole in two months and wants to stay "clean."

Three people who own a nightclub, where much of the business is on a strictly cash basis, decide to avoid paying income taxes by skimming money from the club.

Customs agents go after a ring of gangsters who are smuggling rare parrots into the U.S. from Mexico.

A racehorse owner proves too clever for his own good. His doctored tax returns are filled with phoney deductions, attracting the attention of the T-men.

A Treasury agent goes undercover at an East Coast port to break up an opium smuggling ring.

Frank Shelby, ailing from heart disease, breaks into a hone at the insistence of his wife and steals government bonds that he signs the names of the recipient to and then cashes himself, thereby pocketing the stolen money.

A bus-company owner decides to keep a little extra money for himself by falsely reporting charitable donations as tax deductions. In a case of "poetic justice", he is carried to a Federal penitentiary in one of his own vehicles.

A heartless American criminal sees an opportunity to take the troubles of a shaken Holocaust survivor and turn them to his own advantage. He violates the Neutrality Act and ships airplane parts to France for sale to a country behind the Iron Curtain.

Barney is an old-time gangster who's quickly losing his grip on reality. He leads his gang back into bootlegging, convinced that the prohibition days are still in effect.

Although the feds know that an importer is smuggling expensive Swiss jewelry into the US, they can't discover how he's doing it, despite his being under constant surveillance. They begin an undercover operation, hoping to discover his methods.

Customs agents discover large quantities of expensive--and undeclared--Cuban perfumes that are flooding the market. They soon discover a criminal ring that has a clever plan for smuggling the goods from Cuba into the US.

Undercover agent Frank Ames poses as a small-time hoodlum and gets himself hired by racketeer Herb Kerry. His mission is to uncover information on the criminal's counterfeiting operation. Kerry gets suspicious because of all the questions Ames asks and gives him a job to prove he's not a cop: to carry out a "hit".

After becoming interested in mobster's girl, the son of a sugar distributor gets hooked up with a gang selling illegal liquor.

Paul Lacosta buries his profit from running a gambling den in the backyard to avoid paying taxes. After five years of incessant haranguing from his wife, he digs up the bills to find they've molded. Against his better judgement, they begin to spend the bills they salvaged which tips off authorities.

A somewhat nosy landlady begins to suspect that one of her tenants may be a dangerous loan shark.

The Secret Service is onto counterfeiter Russ Bagley who's working for a major crime syndicate. The agency's anonymous tip comes from Russ' girlfriend who's carrying on an affair with Russ' right-hand man, Nick. They figure that if they get him out of the way, they'll be free to carry on their romance and Nick will be promoted by the mob.

Ben Adams picks up his younger brother, Harry, from prison after a four year sentence and gives him a job in his metal shop. Harry, though, has no intention of "going straight." He hooks up with an old criminal buddy who's heisted five cases of semi-automatics and converts them into fully automatic rifles to sell to mobsters.

An enterprising crook, who wishes to improve his lot in life, lavishes jewelry on a French female opera singer.

Dangerous criminal Vince Sanderson visits his estranged wife Laura who he abused leaving her with a scar. The treasury men set a trap to capture the low life but endangering the beleaguered spouse.