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Dubbed the "Mini Madoff," Kiener is one of Germany's greatest con artists, tricking thousands of private investors and banks, including Barclays and JP Morgan, to the tune of more than $300 million.

Inside the Mind of a Con Artist

Helmut Kiener

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Shaun Greenhalgh is a British artist and art forger; between 1989 and 2006, he produced a number of forgeries including Roman and Chinese art objects, and medieval Christian relics, that fooled some of the world's most respected art institutions.

Shaun Greenhalgh

Nicknamed The Chameleon, Frédéric Bourdin is a former French serial imposter who claims to have faked at least five hundred false identities, including a young Texas boy who went missing in the mid-90s.

Frédéric Bourdin

Jan Lewan is the polka sensation from Pennsylvania who fleeced millions of investors with his classic Ponzi scheme; his name shot to fame when Netflix produced the movie "Polka King" with actor Jack Black playing Jan Lewan.

Jan Lewan

Christophe Rocancourt is a French impostor and con artist who scammed rich and powerful people by masquerading in turn as a French nobleman, the heir to the Rockefeller family, or as a Russian prince.

Christophe Rocancourt

Matthew Cox is a former mortgage broker from Florida who found himself on the Secret Service's most wanted list; he made millions falsifying home ownership and mortgage documents for five times the properties' actual worth.

Matthew Cox

Unearths the human truths behind some of the most extraordinary cases in con artistry.

S1 E6 | Helmut Kiener

E6 | Helmut Kiener

E5 | Shaun Greenhalgh

E4 | Frédéric Bourdin

E3 | Jan Lewan

E2 | Christophe Rocancourt

E1 | Matthew Cox