Horror movies may be a thrilling source of entertainment. However, they may also be opening the door to allow demons into your life. Demons are sneaky and they are always looking for ways to infiltrate.
You must remain vigilant and be on guard at all times. Surround yourself with Scripture, read your Bible daily, pray continually, and avoid evil at all costs.
Yes, movies are only movies. However, horror movies that are about spiritual beings can be very dangerous. Do not give the enemy a foothold in your life. If there is any question, simply avoid the horror movies. There are plenty of other movies you can watch.
Referenced Verses:
Leviticus 19:31
Isaiah 8:19
Ephesians 4:27
Jude 1:9
Deuteronomy 18:10-12