Prison, drugs and debts - who's paying the price of the thriving drug trade in our jails?
Are construction giants exploiting their suppliers to balance their books?
Why is 'private' the word that dare not speak its name in the National Health Service?
Is financial fake news damaging business? Geoff White reports.
What risks do returning jihadis from IS in Iraq and Syria pose in the UK?
Are failings in forensic science leading to more miscarriages of justice?
An investigation into the lucrative trade of selling citizenship to the world's rich.
What part is social media playing in the rise in violent crime in the UK?
An investigation into the former Marianvale mother and baby home in Northern Ireland.
An investigation into Jim Dowson, the front man for Knights Templar International.