I do not like to watch old detective shows because they are only built to keep you hooked for 10 minutes. After 10 minutes, I am out. Because usually they follow a very simple structure, like a murder, a twist, and then the final reveal. Because of it, after a while, a lot of detective shows start to feel extremely similar. Even with the suspects, you can almost always see in their actions or in their behavior that they are suspects or are hiding something.