10 Terrible Horror Movies With Amazing Concepts

10. The Bye Bye Man

If you can forgive The Bye Bye Man's laughably infantile title, it's actually got a pretty damn neat premise at its core - the titular supernatural antagonist gains power from the mere act of people either knowing or saying his name, in turn allowing his influence to spread.

With better execution this could've basically become a new generation's version of A Nightmare on Elm Street, but instead audiences are forced to suffer through a script rife with unintentional comedy, including the now-infamous one-liner, "What do you think I am, a flashlight?"

As for the Bye Bye Man himself, he looks more silly than scary - in turn wasting the brilliant Doug Jones in the role - and his CGI dog-thing-companion doesn't much help either.

Throw in how egregiously the film offers nothing to the likes of Carrie-Anne Moss and Faye Dunaway, and you're left with a flavourless stew of a horror flick which squandered its considerable potential within the first few minutes and never recovered.