The Conspiracy Files: 7/7
Nearly four years after the 7/7 bombing, we investigate the conspiracy theories flourishing on the internet.

9/11 third tower mystery 'solved'
Fire caused the collapse of the third tower at the World Trade Center, a final report is expected to find.

Evolution of a conspiracy theory
Mike Rudin considers why many people don't believe the official explanation of why a third tower collapsed on 9/11.

9/11 - The Truth Behind The Third Tower
The Conspiracy Files returns with an updated investigation into the collapse of World Trade Centre Building 7 on 9/11

Q&A: The collapse of Tower 7
The official version, the conspiracy theories and the evidence surrounding the collapse of World Trade Centre Building 7.

Timeline: WTC 7
Key events leading up to and following the collapse of World Trade Centre Building 7.

Lockerbie
In 1988, 270 people were killed in Britain's worst terrorist attack. But has the full story of Pan Am flight 103 been revealed?

Lockerbie evidence not disclosed
Scottish police had information that could have changed the outcome of the Lockerbie trial, a BBC programme learns.

'I missed the Lockerbie flight by minutes'
Two-hundred-and-seventy people died in the Lockerbie plane bombing nearly 20 years ago. As new questions are raised over the conviction of the bomber, one man continues to marvel at his lucky escape from the doomed flight.

Families respond to Gaddafi's son
Lawyers representing the Lockerbie bomb victims' families and a parent whose daughter died on the flight respond to comments made by Saif al-Islam al-Gaddafi on The Conspiracy Files.

Conspiracy test
Discover how conspiratorial you are by taking our specially devised test.

We're all conspiracy theorists at heart
Producer Guy Smith investigates why conspiracy theories are so popular.

Oklahoma Bomb
Did Timothy McVeigh act alone or were others involved who are now being protected?

Call to reopen Oklahoma bomb case
A former FBI man involved in the Oklahoma bomb investigation is calling for the case to be reopened.

Q&A: What really happened
The official version, the conspiracy theories and the evidence surrounding the Oklahoma bombing.

Timeline: Oklahoma bomb
Key events leading up to and following the 1995 bombing of the Alfred P Murrah Building in Oklahoma.

Plots, paranoia and blame
Senior lecturer Peter Knight examines the rise of the conspiracy theory.

David Kelly
We explore the questions remaining following the death of the weapons inspector.

Kelly death not suicide, says MP
MP Norman Baker tells a BBC Two documentary he believes the weapons scientist was killed by others.

Q&A: What really happened
The official version, the conspiracy theories and the evidence surrounding David Kelly's death.

Timeline: David Kelly
Key events in conspiracy theories leading up to and following the death of Dr David Kelly.

The psychology of conspiracy
When everyday explanations are not big enough: why people believe in conspiracies.

9/11
Across the US we investigate the growing number of 9/11 conspiracy theories.

The 9/11 conspiracy movement
Accusations of US Government involvement in the 9/11 attacks are becoming increasingly bitter and widespread.

Q&A: What really happened
The official version, the conspiracy theories and the evidence surrounding the 9/11 attacks.

Timeline: 9/11
Key events in the growing number of conspiracy theories surrounding the 9/11 attacks.

How Diana Died
A special programme exploring the conspiracies surrounding Princess Diana's death.

Tests 'prove' Diana driver drunk
DNA tests indicate Princess Diana's driver was drunk the night she died, a BBC documentary reveals.

Public doubts over Diana accident
Many people do not believe the death of Princess Diana was an accident, a BBC opinion poll suggests.

Q&A: What really happened
The official version, the conspiracy theories and the evidence surrounding Princess Diana's death.

Timeline: How Diana died
Key events leading up to and following the death of Princess Diana in a car crash in Paris.