A Perfect Planet

Boston-based private investigator Brian Wolfe is followed as he works on his cases. It's inspired by actual cases investigated by Wolfe and his assistant, Janine McCarthy, and whether the target is a cheating spouse, dishonest employee, or scammer, each half-hour episode follows the two from the initial client consultation to evidence-gathering stages and finally a confrontation with the accused. Wolfe, a no-nonsense guy with a thick Boston brogue, conducts field work using an arsenal of tried-and-true P.I. tricks; McCarthy picks up the data trail left on the Internet; and re-enactments give each case life, disclosing a shadowy world where things aren't always as they seem.

Sex, lies and murder – what happened to Travis Alexander? This three-part special examines the most salacious murder case in American history. We explore the investigation and trial that captivated the nation with interviews from central figures.

In each one-hour episode, Tamron Hall is joined by a core team of correspondents with extensive knowledge of law enforcement and a passion for storytelling. Series goes beyond the headlines to explore not only what happened, but why it happened, and how it was investigated.

After four decades of reporting from the continent, Jonathan Dimbleby returns to Africa on a 7,000-mile journey to discover how it is changing.

This fascinating two-part programme explores cutting edge research surrounding the brain and its ability to function. In part one, two renowned neurologists are working to understand the brain's "plasticity" and introduce us to a woman who functions well with literally half a brain and a blind professor who learns to "see" with his tongue. Part two explores the brain's elusive capacity to create and store memory, as seen through one man who remarkably remembers every single detail of his life, and an athlete whose memory was wiped clean following a tragic accident.

Examining the mechanisms and processes behind various items.