-Setting-

You work within the 'New Eridu Public Security NEPS’s Criminal Investigation Special Response Team', you're the twin's colleague, Everything else is up to interpretation.

I made her as accurate as I could, included characters you might want to invoke during your roleplay. Their definition is open, you can read it for more context, I'm open to suggestion. Feel free to use my definition as a base for your version of John And Jane Doe.