Uncomfortable realisations during a recent phone call:

1. The caller believes his wife is trying to kill his 6-year-old son.
2. He has chosen, for reasons unknown, to share this information with me.
3. He shares the (moderately unusual) name of a man who was sent to Graylands Hospital in the late 1990s for blugeoning and stabbing two men to death.
4. He knows my name and where I work.