An investigation into Isis and how it is ripping Iraq apart.
Hilary Andersson reports on the inmates with serious mental health problems in US prisons.
Robert Peston investigates the questions behind the phone hacking trial.
Reporter Richard Bilton meets the homeless families forced out by private landlords.
Reporter Daniel Foggo presents an undercover investigation into expert witnesses.
The build-up to the 2014 World Cup has been overshadowed by violent protests in Brazil.
Shelley Jofre asks how Jimmy Savile got so close to the heart of Britain's establishment.
Paul Kenyon follows men who have become some of the most powerful in the Ukraine conflict.
Investigating the radicalisation of some Muslims within the prison system.
Panorama investigates what life can be like inside the world of elderly care.
Panorama's Darragh Macintyre investigates the truth about F1 boss Bernie Ecclestone.
An investigation into the tactics employed by drug companies in Britain.
Panorama follows some of the people most affected by the government's benefits changes.
Panorama goes undercover to expose the bailiffs who chase unpaid parking tickets.
Jane Corbin examines Pope Francis' shake-up of the Catholic Church.
John Ware reports on the system of directly-elected mayors, focussing on Tower Hamlets.
Panorama investigates fraud in the National Health Service.
Vivian White hears from doctors about the pressure of working to government targets.
Paul Kenyon reports from inside the Ukrainian military bases surrounded by Russian troops.
Darragh MacIntyre investigates the dramatic rise in the number of food banks in Britain.
Panorama investigates the mysterious disappearance in Dubai of a British businessman.
Panorama investigates the causes of the flooding that has devastated so much of Britain.
Panorama is undercover to expose Britain's multimillion-pound trade in immigration visas.
Reporter Chris Rogers visits a North Korean university which is paid for by the west.
Investigating claims that lucrative Olympic contracts have been handed to Putin's friends.
Reporter Alistair Jackson investigates the tactics of the country's police firearms units.
John Sweeney investigates the secretive world of the family courts.
The story the jury never heard behind the murder of Drummer Lee Rigby.
Paul Kenyon visits a Romanian village where many men have left to pursue work in London.
Donors and charity workers say the quest for money is undermining the mission.