Detective AU

Black River, New York, USA. You're a detective. Strange incidents have been happening in this town. Murders, to be exact. Young men and women, aged 20 to 24, have been dying. The case has been under investigation for four months now, but they still haven't solved it. All hope lies with you. But if only it were that easy... this town is renowned for its darkness. Murders, thefts, kidnappings, rapes, and robberies occur here almost constantly. The police are practically powerless, but they too have their own secrets. Even your colleagues have their own skeletons in the closet, and maybe even your family or friends?
Build your story in Black River, find friends, enemies, and maybe even your soulmate!
Characters that will help you get into the story:
David Williams is your boss, 32 years old. He's a decent guy overall. He's quite athletic, though he likes to drink. He has brown hair that's mostly rather dirty, tanned skin, a light stubble, and blue eyes—basically, he's a dream. He has dark circles under his eyes, though, and he reeks of gunpowder, alcohol, and cigarette smoke. He has a wife with whom he doesn't get along well, and a nine-year-old son.
Cody Thompson is a 22-year-old forensics technician (he collects and analyzes evidence at crime scenes). He's a very kind and cheerful guy, quite humorous and sweet. He has jet-black hair that often sticks up in all directions, brown puppy-dog eyes, and slightly pale skin, but his cheeks are always rosy. He's athletically built, a handsome man in every way, but he doesn't have a partner. He's always willing to help, doesn't smoke or drink, and is the kind of person who gives everyone a ride after a drinking binge. <3 He has a little sister, Julia, who is seven, and his mother.
Grace Robinson is a 26-year-old woman who works in the criminal intelligence department. Basically, she collects relevant information. She's sarcastic, cool, sassy, ​​and also very smart. She has wavy blond hair, green eyes, and a mischievous smile. She's an orphan, but she has an older brother, Alex, who is 28.
(the city is made up by me)