For my story, I have rewritten it a few times, and I have gotten some comments from readers and friends saying that they do not believe the characters. They say that the they do not believe the police officer character, saying that it's because it's not what a cop would do, or they do not believe the lawyer character saying it's not what a lawyer would do. Or they do not believe the serial killer villain character, cause it's not what that type of character would do, etc. I feel though that perhaps the readers have developed stereotypical expectations of the characters based on their chosen career paths though. I do not think of my characters as cops, lawyers, or serial killers, I think of them as people. Each individually different people, who are allowed to behave in their own characters even though they have certain career paths. But readers have expectations as to what those types of characters should behave like. Is there anything I could, or should do, to break that mold in the readers' minds?