In a way, On the Edge is a wasted potential, but it's hardly a film that should be avoided.
Its main problem is the fact it doesn't offer anything new. Patients in the mental institution, group therapy, doctors, rebellious patient that just doesn't want to follow the routine. That's right: we've seen it all, and we've seen it better; One Flew Over the Cuckoo's Nest is simply too memorable and impossible to forget when watching one of the films about mental institutions.
On the Edge also feels a bit rushed, as if 30 minutes of it is missing. This doesn't let us get to know characters better or understand their stories.
But the film isn't completely bad. Stephen Rea does make us believe he's a doctor, and it's possible to sense a real person behind the professional persona, even if we never get to know much, if anything, about him. But the real heart of the film is Cillian Murphy, who manages to make his Jonathan as complex as the script allows him to.
He brings warmth, honesty and sarcasm to his character, without being over the top, even in extreme situations. Cillian Murphy is one of those actors who can speak with their eyes, and in this early role he proves himself as a talented actor that should not be overlooked.
