Actually I saw *Hard Candy*, it's about Hayley Stark torturing Jeff Kohlver:

[![enter image description here][1]][1]

But here in the poster, it shows Hayley Stark standing in a trap instead of Jeff Kohlver:

[![enter image description here][2]][2]

Why was The Hard Candy poster made in reverse to the plot?  


  [1]: https://i.sstatic.net/2tsjj.jpg
  [2]: https://i.sstatic.net/esmiY.jpg