Serious Detective Character Desk Weary Expression

Create an image of a serious detective character sitting at a desk with a weary expression. He should be wearing a fedora and a trench coat, with a chalkboard behind him displaying unrelated newspaper clippings and photographs of various unsolved cases. Replace the yellow notes with blue ones that read "Missing Persons" and "Unsolved Mysteries." Include scattered paper and old files on the desk for added texture. Remove any brand references or specific names from text elements to generalize the theme.