Financial expert Ray Dirks (played by Jeffrey Wright) exposed one of the biggest corporate crimes of all time - and yet he was the one who ended up in front of the Supreme Court.

Whistleblowers often face intimidation from those they bring to justice, but also face hostility from their co-workers, new employers, the authorities and even the public. Why are we suspicious of "tattletales" and what can we do to make vital whistleblowing easier?

Read more about Tim's work at http://timharford.com/