The story is quite unrealistic. I felt disturbed by the decisions that he made in the season. The department of a local area is so advanced that they arrive at the spot just a moment before dexter can do his killing. There were just two killings throughout the entire season and bringing back the son at the time when he did his first kill after a long time. The whole story plot is quite uncommon and a local area cop finds Dexter and even concludes that he is BHB. When the BHB murders happened and the bodies were found no one noticed the injection marks but this time it was like quite easy to see. The entire plot is useless and he always makes people unconscious when there is a way out but this time he killed. Nothing seems right.