BBC Four HD Thursday

David Attenborough explores frozen regions around the world, beginning in Antarctica, where Emperor Penguin chicks are abandoned by their parents as spring begins

A tough Los Angeles private eye is hired to find the missing girlfriend of an ex-convict. Crime drama based on the novel by Raymond Chandler, starring Dick Powell and Claire Trevor

Nigel Williams investigates the truth behind Raymond Chandler's celebrated private eye Philip Marlowe and discovers he was as much knight in shining armour as hard-boiled detective

A private eye protects a socialite from blackmailers, but reckons without a complicated intrigue of jealousy, murder and extortion. Thriller, with Humphrey Bogart and Lauren Bacall

Novelist Sir Salman Rushdie talks to John Wilson about his formative creative influences and experiences, such as the folk tales and religious fables he grew up with

The FBI joins the investigation into the attack on the 2017 Las Vegas Harvest music festival, as doctors concentrate resources on treating the wounded most likely to survive

The impact the attack on the music festival had on survivors, with some still searching for closure and others becoming activists to prevent it happening again

Nigel Williams investigates the truth behind Raymond Chandler's celebrated private eye Philip Marlowe and discovers he was as much knight in shining armour as hard-boiled detective

David Attenborough explores frozen regions around the world, beginning in Antarctica, where Emperor Penguin chicks are abandoned by their parents as spring begins