Murder: No Apparent Motive

There are about 600 murders each year in the UK. So, what drives people to kill? Are some people born to kill or are they driven to it by circumstances? Michael Mosley delves into the BBC archives to chart scientists' progress as they probed the mind of the murderer to try to understand why people kill, and to find out whether by understanding murder we can prevent it.

A serial killer who makes his living as an adult video maker/editor, becomes involved with an artist neighbour. He tries to keep his secret from her, but the police are slowly closing in on him.

Newly-paroled former US Army ranger Cameron Poe is headed back to his wife, but must fly home aboard a prison transport flight dubbed "Jailbird" taking the “worst of the worst” prisoners, a group described as “pure predators”, to a new super-prison. Poe faces impossible odds when the transport plane is skyjacked mid-flight by the most vicious criminals in the country led by the mastermind — genius serial killer Cyrus "The Virus" Grissom, and backed by black militant Diamond Dog and psychopath Billy Bedlam.

An agoraphobic psychologist and a female detective must work together to take down a serial killer who copies serial killers from the past.

Over the course of a decade, editors of the San Francisco Chronicle entice themselves in the murders of the Zodiac Killer. However, as time runs its course, interest in the case dwindles in the eyes of the professionals. The Killer stops interacting with the public. However, believing he has the answers, an amateur cartoonist from the initial sightings races against time to prevent what he believes is another murder.

Molly Stewart, a teen at the top of her class who survives by working nights as a prostitute on Hollywood Blvd, finds her world beginning to fall apart when a depraved, necrophiliac serial killer begins targeting LA’s streetwalkers.

Several ordinary high school students go through their daily routine as two others prepare for something more malevolent.

A detective comes out of retirement to help his daughter's fiance prove that he did not commit a series of murders.

Sommernachtstod

Both Scotland Yard and an amateur American sleuth are tracking a master criminal known as The Frog. This moniker refers to the bulging-eyed mask worn by the evildoer, and is reflected by the frog icons painfully tatooed onto the forearms of his henchmen. The trail leads to the country manor of an enigmatic, steely-eyed nabob, whose repressed son has eyes for the artistes at the Lolita cabaret, and whose lovely daughter captures the fancy of both the American playboy and the villain himself. Murder, kidnapping and seduction ensue.

Ram Raid Mums follows three desperate mothers, at their breaking point. With nowhere to turn, they discover Mana Inc, a lifeline that sparks hope.

Jack the Ripper was a prince, a pauper, a mason, a madman... A host of more and more bizarre theories have surrounded the unexplained killings in Whitechapel since they hit the headlines in 1888. This film dispels the grisly fiction, revealing for the first time the true contents of the police and Home Office files on the case, drawing on the expertise of historians and of those who have encountered today's killers - on the street or behind bars.

America has a fascination with serial killers. Many of them are household names, Ted Bundy, John Wade Gacy, Jeffrey Dahmer. But there is another group of serial killers with even higher body counts. However, chances are you've never heard of Samuel Little, The Grim Sleeper, or The Sunday Morning Slasher. Combined these men have 85 confirmed murders. There are no books, movies, or television shows about these killers. Why? Because they are black serial killers. Filmmaker Sean Reid explores black serial killers and the lack of public information and media representation about them. Reid interviews Allan Branson, a criminal justice professor. Branson discusses the history of African-American serial killers and the negative stereotypes and biases that have influenced their portrayal in the media.

Four-time Emmy winner John Kastner was granted unprecedented access to the Brockville facility for 18 months, allowing 46 patients and 75 staff to share their experiences with stunning frankness. The result is two remarkable documentaries: the first, NCR: Not Criminally Responsible, premiered at Hot Docs in the spring of 2013 and follows the story of a violent patient released into the community. The second film, Out of Mind, Out of Sight, returns to the Brockville Mental Health Centre to profile four patients, two men and two women, as they struggle to gain control over their lives so they can return to a society that often fears and demonizes them.

Alka Singh, the leader of a political party, and her obsessive love for Rohan Mehra, a rising star of Bollywood.

Walker investigates a murder connected with a missing government weapon. In addition, he tries to track down a teen on the run from a crime syndicate.

Murakawa, an aging Tokyo yakuza tiring of gangster life, is sent by his boss to Okinawa along with a few of his henchmen to help end a gang war, supposedly as mediators between two warring clans. He finds that the dispute between the clans is insignificant and whilst wondering why he was sent to Okinawa at all, his group is attacked in an ambush. The survivors flee and make a decision to lay low at the beach while they await further instructions.

Recognized for his distinctive wolf costume and boisterous social media antics, Xaviar Babudar aka ChiefsAholic rose to fame as one of Kansas City's most fervent fans. However, a secret life came to light when he was arrested in Bixby, Oklahoma, unraveling a series of unsolved bank robberies committed across the Midwest.

Special Agent Jennifer Marsh works in an elite division of the FBI dedicated to fighting cybercrime. She thinks she has seen it all, until a particularly sadistic criminal arises on the Internet. This tech-savvy killer posts live feeds of his crimes on his website; the more hits the site gets, the faster the victim dies. Marsh and her team must find the elusive killer before time runs out.

While drying out on the West Coast, an alcoholic hit man befriends a tart-tongued woman who might just come in handy when it's time for him to return to Buffalo and settle some old scores.