I will provide a background that is necessary to understand the full scope of the story.
When I was in high school I had a very good friend, he dated one of my cousins, which in my family was more like a sibling. During his senior year he was involved in an accident and was killed.
The story starts a few years later; I had learned about various gifts that people in my family had inherited and had been experimenting for some time. My cousin was skeptic, but she was also intrigued to see if I could do anything. At this time we worked together and she was seeing one of our co-workers, who had become another of my close friends. One night after work he was coming over to my house to hang out, she rode home with him; it would have been between 9:30-10:00 pm. I was young, and really not considering any consequences of anything, so I asked them if they would want to check out a ritual I had made to contact the other side. Thankfully I no longer remember the particular ritual enough to explain it, but as the lights were off and the candles out we all experienced something. We had asked to speak to my old friend. My cousin (Who used to date him) said she felt someone tickling her sides as he often did. My friend (The new boyfriend) said that he had felt like someone was upset with him, not angry, and did not want him there. I had the worst feeling, I could feel something definitely evil lingering outside of a curtained window, as soon as we told each other our feeling we turned all of the lights back on, and walked my cousin home (She lived next door). After a while I finally felt comfortable being at home again and my friend left.
The next day I had agreed to watch my nephew (Different Aunt). I was cleaning the house before he got there and that included taking school books and other junk from the living room to my bedroom. One my second trip to my bedroom I noticed a long carpet fiber in the hall, with my hands full I decided I would pick it up on my way back. When I walked back down the hall I was shocked to find that the fiber was not a fiber, a snake had somehow managed to get in our house, this has never happened before or since. I was frozen in my bedroom doorway as snakes are a crippling fear for me.
Needless to say, I now always think of any possible consequences before attempting anything involving my family's gifts.