Ernest Hemingway's The Killers (1946)

A dramatised instruction film made to instill in RAF flying personnel the importance of flight safety in peacetime.

BBC Four Collections delve into the archives to select classic full-length BBC TV programmes, creating a lasting online legacy for future audiences to explore and enjoy.

A group of U.S. soldiers returning from Iraq struggle to integrate back into family and civilian life, while living with the memory of a war that threatens to destroy them long after they've left the battlefield.

A young woman (Meiko Kaji), trained from childhood as an assassin and hell-bent on revenge for the murders of her father and brother and the rape of her mother, hacks and slashes her way to gory satisfaction in turn-of-the-twentieth-century Japan. Rampant with inventive violence and spectacularly choreographed swordplay, Toshiya Fujita’s pair of influential cult classics Lady Snowblood and Lady Snowblood: Love Song of Vengeance are bloody, beautiful extravaganzas composed of one elegant widescreen composition after another. The first Lady Snowblood was a major inspiration for Quentin Tarantino’s Kill Bill saga, and both of Fujita’s films remain cornerstones of Asian action cinema.

Sherlock has his mind palace, Morse his music - every detective has an edge. For most, it's forensic science. This three-part series provides a rare and fascinating insight into the secret history of catching murderers, charting two centuries of the breakthroughs that have changed the course of justice. Surgeon and writer Gabriel Weston explores this rich history through some of the most absorbing, and often gruesome, stories in the forensic casebook - and looks ahead to how forensics will continue to solve the murders of the future.

An audacious plot to defraud a millionaire businesswoman turns into murder and the callous disposal of her body in a wheelie bin. Previously unseen videos reveal the killers' ruthlessness.

Documentary examining the vital breakthroughs that helped police catch the killers of 60-year-old Sadie Hartley, who was immobilised with a stun gun and stabbed to death in her own home in January 2016. Detectives quickly identified two suspects, but only patient and thorough police work could uncover the evidence to secure a conviction.

Somebody once said that if slaughterhouses had glass walls everyone would be a vegetarian. Slaughterhouse: The Task of Blood is that glass wall, filmed in a small, family-run abattoir in Oldham, Greater Manchester that is struggling to survive. The process of meat production is shown in graphic detail - the animals arrive healthy and whole and are then killed, skinned, eviscerated and butchered, but the film is not just about an industrial process, it is also about the men with the sharp knives, the killers and cutters. It's a film about white, working class men.

Marshal Wyatt Earp kills a couple of men of the Clanton-gang in a fight. In revenge Clanton's thugs kill the marshal's brother. Thus, Wyatt Earp starts to chase the killers together with his friend Doc Holliday.