What makes a person walk into a theater or a church or a classroom full of students and open fire? What combination of circumstances compels a human being to commit the most inhuman of crimes? Can science in any way help us understand these horrific events and provide any clues as to how to prevent them in the future? As the nation tries to understand the tragic events at Newtown, NOVA correspondent Miles O’Brien separates fact from fiction, investigating...

"What if a well respected doctor inexplicably goes on a murderous rampage? When Dr. John Meacham goes on a shooting spree at the office, his business partner, staff, and two patients are killed in the bloodbath. Then Meacham turns the gun on himself. The blame falls on Dr. Lou Welcome. Welcome worked with Merriman years before as a counselor after John's medical license had been revoked for drug addiction. Lou knew that John was an excellent doctor...

August 1st 1966 was the day our innocence was shattered. A sniper rode the elevator to the top floor of the iconic University of Texas Tower and opened fire, holding the campus hostage for 96 minutes in what was a previously unimaginable event. TOWER combines archival footage with rotoscopic animation of the dramatic day, based entirely on first person testimonies from witnesses, heroes and survivors, in a seamless and suspenseful retelling of the...

"Sam Blue stands accused of the brutal murders of three young students, their bodies dumped near the Georges River. Only one person believes he is innocent: his sister, Detective Harriet Blue. And she's determined to prove it. But Harry's outburst at her brother's trial earns her a reassignment -- to the Outback. With no choice but to leave Sam's case alone, she relocates to Last Chance Valley, population 75, where a diary found on the roadside outlines...

"The definitive, inside story of the Idaho murders from bestselling author Howard Blum, whose groundbreaking coverage of the story was nominated for a Pulitzer Prize. Timed for a trial that will capture national attention, When the Night Comes Falling examines the mysterious murders of the four University of Idaho students. Having covered this case from its start, Edgar award winning investigative reporter Howard Blum takes readers behind the scenes...

"In one of the year's most anticipated debut psychological thrillers, a family made infamous by a true crime documentary is found dead, leaving their surviving son to uncover the truth about their final days. "They found the bodies on a Tuesday." So begins this twisty and breathtaking novel that traces the fate of the Pine family, a thriller that will both leave you on the edge of your seat and move you to tears. After a late night of partying, NYU...

Based on horrifying crimes discovered in Snowtown, Australia in 1999. The film follows a mother raising her three boys in a poor suburb. She takes up with a new man, hoping for security but instead welcoming a vicious predator into her home. An uncompromising look at the alarming circumstances that led to the notorious crimes.

Old friends try to come to grips with the darkness of the past--a secret ritual that left behind a gruesomely dismembered body--and find themselves face-to-face with the evil they helped create.

Florida psychologist Chloe Marin and Luke Cane, a British ex-cop-turned-P.I. investigating the disappearance of a young swimsuit model on behalf of her father, have trouble trusting each other, even though they are attracted to one another and have the same hunch that a killer is using a modeling agency to stalk his prey. When Chloe arrives late for an appointment at the modeling agency, she discovers a gruesome mass murder eerily similar to one she...