Investigative documentary following three families involved in the Sandy Hook shooting, as they try to make sense of the tragedy and find a way to move on and rebuild their lives.

International investigative documentary series. A look at the continuing success of the Sinaloa Cartel in the wake of its leader's arrest in February 2014.

International investigative documentary series. In the wake of the country's economic stagnation, Robert Peston examines the rise of Marine Le Pen and the Front National in France.

Investigative documentary. Britain's Jihadi Brides reveals how the sophisticated recruiting tactics of IS have shattered so many lives.

Documentary. The inside story of how a small band of fanatical jihadists became the world's richest terror army. Peter Taylor looks at the wealth of the so-called Islamic State.

The inside story of how and why the worst Ebola outbreak in history wasn't stopped before it was too late. This film exposes tragic missteps in the response to the epidemic.

Investigative documentary. Jane Corbin examines the evidence for the supposed conspiracy about Bin Laden's death.

Investigative documentary. Hans Rosling examines the world goal of eradicating extreme poverty.