Horror films are characterised by their ability to make you hide behind your hands/cushion/sofa, jump out of your seat and have nightmares for days.
But sometimes when you sit down to watch the grimmest, bloodiest, freakiest slasher film you can find, you simply end up laughing. Or switching it off.
Ahead of that time of year when everyone feels pressured to do something scary - Halloween, we've compiled the biggest scary film let downs chosen by those within the HuffPost UK offices.
Take a look at our top 10 below and let us know which horror films have failed to scare you...