You'll never look at these films the same way again. For this list, we’ll be looking at horror flicks that drew on real-life events or people. Our countdown includes “Primeval”, “A Nightmare on Elm Street”, "Psycho", and more! What horror movie based on true events was too scary for you to finish? Let us know in the comments!

Watch more great horror videos here:
Top 20 Scariest Horror Movies of All Time: https://youtu.be/HQhdackJsUE
Top 21 Best Horror Movies of Each Year (2000 - 2020): https://youtu.be/mXY0K4_yI9A
Top 20 Scariest Horror Movies You Probably Haven't Seen: https://youtu.be/5AVYMkq_L1s

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