As a former prison guard in a Texas maximum security state penitentiary in a department where inmates were housed in single cells and some experience as an inmate myself, I found this movie to be worthy of a watch. It is sad as it depicts a man who had his life together and was ultimately found at the wrong place at the wrong time and his leering insanity causes him to question what is real versus what he is imagining. The movie is quite captivating especially given that half of it takes place depicting what he is experiencing in his cell (which is a very accurate depiction similar to real life) and the majority of the rest of the movie is based on his memory of what landed him in prison. The ending would seem happy as he is ultimately released and proven innocent but on the same token, he must live without his wife which is sad in its own right. The writers and producers seemingly did a lot of research to portray an accurate showing of what life is like for both officers and inmates in a prison where segregation is provided as well.