Kumari Kandam is the legendary lost continent of Lemuria, the center of Tamil Civilization, which existed in the Indian Ocean. By R.S. Pandey.

A pensioner who died in 2014 could have been behind a spate of sadistic killings in the 1970s and 1990s, German investigators say. They are examining Manfred Seel's links with the murders of five women and a teenage boy. Organs had been taken from all of the victims' bodies. The five women were all working as prostitutes when they died. Investigators say it is possible the killer had an accomplice and that there may have been other victims.

Hardboiled detective fiction + sci-fi/fantasy = a walk down the mean streets of sci-fi/fantasy.

The U.S. government says it has finally put an end to what investigators call one of the longest running mail frauds in history. The scheme preyed on sick, elderly and vulnerable Americans, promising guidance and talismans from a French psychic named Maria Duval.

Written by Arnold Ridley.

An open investigation into the disappearance of 243 men, women and children. Where are they? And why does nobody know?

For 28 years, Kay Grayson lived side-by-side with wild black bears in North Carolina's swampy coastal forests, hand-feeding them, defending them against poachers, and letting them in her home. When she went missing last year, the only thing the investigators could find were her clean-picked bones. And that's just the start of the mystery.

An exclusive excerpt from The Midnight Assassin: Panic, Scandal, and the Hunt for America's First Serial Killer reveals a forgotten time in Austin history, when a series of brutal, unsolved slayings terrified officials and left them wondering if a madman was on the loose.

USS Conestoga, believed sunk near Hawaii, was 2,000 miles away, near San Francisco. By Michael E. Ruan.

Even after all the discoveries we made in our search for answers about the mysterious French psychic Maria Duval, we still need to solve the mystery of this woman and confront her face-to-face. This time, we go to France.

Princetonian, Olympian, Financier, Fugitive. By Kip McDaniel.

The shoot-down of Malaysia Airlines Flight 17 over Ukraine has served as a potent propaganda club against Russia but the U.S. government is hiding key evidence that could solve the mystery, writes Robert Parry.

Two families, two bodies, and a wilderness of secrets. By Alex Tizon.

This week, things get even weirder (think UFOs and human cloning) as we take a detour on our twisted treasure hunt for Maria Duval to find out more about the scheme's alleged masterminds.

If your child gets sick, hope for something mechanical. Failing that, wish for something commonplace. This is a mother's quest to find her daughter a diagnosis. By Alison Motluk.

A journey to understand how a real-estate agent in the Philippines became the target of a criminal mastermind. By Evan Ratliff. Episode one.

“Count” Victor Lustig was America’s greatest con man. But what was his true identity? By Jeff Maysh.

It is starting to become clear that one of the longest running cons in history is hardly the work of one woman.

Maria Duval remains a mystery. And at this point, it's unclear whether the face behind the biggest scam ever even exists. Some say she is actually the brainchild of an elderly Argentinean man. Others claim she was cooked up by a man in Singapore. But many remain adamant she's real and is enjoying a luxurious retirement in the South of France.

CNNMoney goes on a hunt for the woman who is the face of the one of the biggest cons in history. This psychic scam has allegedly bilked hundreds of millions of dollars from some of the world's most vulnerable people, but investigators from around the globe have not been able to stop it.