Tuesday: Steven Sotloff - friend, LSD researcher, Millionaire Chess Tournament, and more...

Just days after Steven Sotloff's mother sent a direct plea to ISIS to spare her son, the militant group releases a video that appears to show the American journalist being beheaded...As research tool, LSD fell from favour decades ago -- but now, a British scientist is tuning in, turning on, and dropping back in...and grandmaster flash: welcome to the Millionaire Chess tournament in Vegas.

Part One

Iraq Amnesty
A report from Amnesty International says ISIS has killed hundreds, possibly thousands, of people in a campaign of ethnic cleansing.

Steven Sotloff: friend
Today brought news of another horrific video in which a journalist is beheaded by an ISIS militant. Journalist Portia Walker was a friend of Steven Sotloff's and worked with him in Libya.

Accurso at Charbonneau
Quebec construction bigwig Tony Accurso finally takes the stand at the Charbonneau Commission -- where he'll face questions about ties to organized crime.

Millionaire Chess Tournament
A group of investors is betting that if people will tune in to watch poker, they'll also watch live chess. And they're putting a million dollars on the line to bring their tournament to Las Vegas next month.

Part Two

Former Canadian Nazi: neighbour
Seventy-two-year-old John Beattie is running for office in the town of Minden, Ontario -- which comes as a shock to those who know him as the founder of the Canadian Nazi Party. Anabel Briseno has been living next door to John Beattie for the past fifteen years.

Former Canadian Nazi: Farber
Bernie Farber is the former chief executive officer of the Canadian Jewish Congress.

LSD researcher
Decades of stigma caused doctors to drop LSD -- as in, stop using it -- as a research tool. Now, for the first time in forty years, a British doctor's patients are dropping acid once again -- as in, using it -- and the results are promising.

Part Three

Singapore refugee
In Canadian law, a "convention refugee" is someone who can't return home because he or she fears persecution. As a gay man, Gavin Lee believed he fit that definition. And the Immigration and Refugee Board agreed. Until, abruptly, it rescinded Mr. Lee's refugee status.

From Our Archives: Charles Bowden (obit)
We remember journalist Charles Bowden, author of Murder City: Ciudad Juarez and the Global Economy's New Killing Fields, who spent his career illuminating the darkness of Mexico's drug wars.