Hidden

This movie is small, hardly anyone has seen it, and its pretty new. It also involves a twist that I think completely undermines the film, so Im just gonna go ahead and give a spoiler warning right now. Im gonna talk about this twist rightnow

Okay, so the three main characters have the disease the whole time, but we only find out in the final act of the film. Why does this bug me? Why do I find my self repeating my little mantra that artists shouldnt lie to their audiences? Is it some sort of...