What suspects can you have in your murder mystery story it is set in hairdressers. girl gets murderded . who can murder her and their motives. thanks?

You need to decide these things for yourself if you're going to write a mystery! If you can't think of the main murder and a motive, you should probably write some other kind of story about hairdressers. It's an interesting job -- you could write about the people who work there and their lives, or about a romance with one of the hairdressers, or even a nonfiction work about what it's like being a hairdresser.

If you really want to write a mystery, you will need to decide who wants to murder this girl and why. That's the core of a mystery. Then, you need to come up with some other people who might be guilty, to throw the investigator off and make the story more complicated. Think about your girl's personality and life, and find something that would make someone kill her.