Dark Secrets People revealing hidden sins, fears, and shameful actions. (15/20)

I can think of two contenders.

One was a young man who told me that while driving he felt the urge to ram other drivers who had annoyed him. I think he had not always resisted the urge.

The other was an older man, a white immigrant to the UK, who had difficult psychiatry. It emerged he had been a torturer, I think likely an executioner, in a civil war many years ago.