There's a something which is a huge danger because to trap its prey/victims it creates a perfect representation of a place that feels safe & happy to them, with something to help make them believe it. It works better with people who feel very safe most of the time, but almost everybody has a place where they feel safe or that they can be convinced to feel safe in. Naturally distrustful people and people who have learned to be distrustful can pick up the minor glitches within a few hours, when something pings their memory wrong and they start pulling threads and unravel it. So, if you knew this all, and then you saw somebody get whammied and barely pause for a second...wow, must suck to be them.