Ellie Cawthorne investigates the multimillion pound trade in fake essays and dissertations
The charities and businesses owed money for sports advertising they never received.
Zareer Masani considers the relationship between voting and other democratic rights.
'Bogus' jobs at the Jobcentre - John Waite investigates.
Josie Long presents stories of imitation and plagiarism.
Aleks Krotoski explores the world of spam, scams and caches of forgotten gold.
Is organised voting fraud skewing the outcome of local elections in some parts of Britain?
Laura Barton concludes her three-part series on the place of confidence in modern life.
Sheila Dillion investigates the problem of food fraud.
Ex-pats' retirement dream in France is left in tatters by British fraudster.
Sue MacGregor reunites some of the people involved in the 1983 Hitler Diaries hoax.
John Waite meets the owner of a Dubai property company and some of his unhappy clients.
Fi Glover's guests share their experience of being scammed by sophisticated fraudsters.
Josie Long hears stories of doppelgangers.
John Waite investigates the Marcos mystery.
Newly declassified documents tell the stories of Britons persecuted by Nazi Germany.
Susie Barrie follows the experts employed to tell fine wines from fakes.
Matthew Sweet discovers his favourite painting is a forgery. But does it really matter?