Bert, the person who wrote the first post said that the writers and producers "really blew it" which, in my interpretation, is saying that the show was not well-made. And what is the point of posting here or even coming to this website if you don't like the show?
Criticizing a murder mystery because its portrayal of detective work is unrealistic is like criticizing "Jack and the Beanstalk" because of its unrealistic portrayal of gardening.