Becca van Sambeck

Allison Mack is alleged to have come up with the branding ceremony that was a centerpiece of self-help organization NXIVM's secret inner sex cult.

On the third season of "A.P. Bio," some of the teachers reveal they keep an "if I go missing" kit filled with passwords, lists of enemies, and more.

J.K. Rowling has made controversial comments about the trans community in the past, so the plot of her new book, "Troubled Blood," has many fans furious.

Judson Hoover killed his wife, Rebecca, and moved her body to two different storage units.

Marc Elliot has long claimed working with NXIVM cured his Tourette Syndrome.

The whistleblowers who exposed Eric C. Conn's scam speak out in "American Greed: Biggest Cons."

John Bravata would use the promise of a free lunch to lure senior citizens into his seminars and investing in real estate — but their money was actually being used to fund his lavish lifestyle.

After buying the drug Daraprim and raising the price by 5,000 percent, Martin Shkreli attracted nationwide fury  — and he seemingly loved the attention.

Bernie Madoff had appealed to be released from prison early, due to his health issues.

Jordan Belfort rose to infamy for scamming people out of their money, as depicted in "American Greed."