You generally want to show the person's face.
There could, and maybe should, have been some props or some other elements to tell more of a story. For example, you could have someone wearing a mask, dressed in black combat boots, black jeans and a wife beater to add a sinister element in the shot. Maybe have that person in a boat which could be construed to mean that the person tied up was about to "go fishing." (Godfather reference).
As is, the image is well composed and technically well done, but it falls short in telling a more compelling story.