Federal agents seek to unmask the anonymous mastermind of the world's largest online and underground drug bazaar, despite potential corruption in their own ranks.

A family feud is started between a mother and son over their originally $100 million publishing fortune, with the son accused of squandering money and fraud.

In this episode, a doctor in Michigan makes millions by giving chemotherapy to patients who do not have cancer. Also in the episode, two bank robbers near Chicago repel 17 stories down the Metropolitan Correctional Center to escape.

Follows Darren Berg of Seattle, who scams investors to buy yachts and a mansion. The episode also follows New York socialite Dina Wein Reis and her grey market selling scam.

A 28-year-old hacker named Daniel Rigmaiden allegedly steals millions of dollars from the U.S. government; a wise-guy wannabe in witness protection creates a mortgage fraud scam.

A fraudster in California promises to build a medical glove factory in the U.S. and steals millions of dollars from investors.

The Broadway premiere of ``Rebecca'' implodes thanks to New York stockbroker Mark Holton, who allegedly swindles millions of dollars from investors.

A neighborhood ice cream parlor in West Roxbury, Mass., lands the Palladino family in a major case of fraud.

U.S. law enforcement teams up with Jamaican authorities to stop criminals using call centers in Jamaica to flood the U.S. with lies about lottery millions won by unsuspecting victims.

A painkiller business in Florida turns twin brothers into millionaires.

A luxury car salesman is wanted for defrauding customers and banks; a man faces mail and wire fraud charges related to claims that he owned a percentage of Facebook.

Doug Cassity sells fake prearranged funeral contracts, amounting to $500 million, with the help of sexy saleswomen.

Viewers help law enforcement apprehend criminals featured on the show.

First the episode details the Bay Medical Clinic scam in Brooklyn, where a mother and son scam $50 million from patients. Also in the episode, the studio Gigapix scams millions from people who want to be movie producers.

Russian gangsters use beautiful women to seduce amorous men in nightclubs out of their money and jewelry.

A phony psychic scams a wealthy but lonely timber baron out of millions while her devious daughter pretends to be in love with him.

Authorities charge a nurse with murder after an illegal silicone injection leads to death and knock-off cosmetic injections paralyze four others.

A financial fraudster seeks deadly revenge after being placed behind bars for propositioning his assistant's daughter.

A man, appearing to be nothing more than a wealthy surfer, allegedly commits murder and robs an armored car, leading the FBI on a chase spanning multiple states.

The former New Orleans Mayor exploits the tragedy of Hurricane Katrina by accepting bribes and corrupting the rebuilding process.