The single biggest weakness this film has is that it’s stars are much older than the people they were portraying. The effect this has is to diminish what’s most appalling about the stories of O’Neill and Hampton — that they were little more than children, manipulated and murdered by their government. 

I have no complaints with the performances themselves — although I think O’Neill is underwritten — and I think the film as a whole is very strong. But the age thing is a serious problem.