If in doubt, cut the relationship---

There are times in my life that despite several warning signals, I failed to cut a person off my life.
Sometimes the warning may have come to you in form of an intuition, or sometimes it may have come in form of some logical reasoning, but whatever the source of your warning, it is important to pause and take notice; Not to do so is to expose you and your family to great dangers and risk.

However, that doesn't mean that you go about cutting relationships at every first warning; What it means is to dwell sufficiently on that warning, take heed, and then verify in the real world.

Remember this, and it will save you a lot of trouble!