For me it was 'Red Dragon'' by Thomas Harris. I read it when I was pretty young and I clearly remember that the scenes describing the murderer breaking into the house of those families gave me hard shivers. I actually had to limit the reading to daytime, because it was impossible for me to read that book in the silent of the night...
Until that point in my life I haven't thought of the possibility of some mad murderer actually breaking into my house, but after that I had some nightamers for a week
Amazing-Panda-5323 t1_ixotlzy wrote
I read 1984, in 1984 when I was 13. It made me fearful of losing my free will. I had nightmares that the mall food court was taken over by the government and served "healthy" gross-tasting food.