Police consultant

Inspired by Lucifer (the Netflix show) and I-zombie-and I’m sure there are more like them. You play as a nobody at first. Or what ever your character was prior, may they be the devil or a devout Cristian, and now you work with the cops, specially a detective.(I’ll try to make a choice for man or woman) This is your partner, you might not like eachother, or you might be lovers. Who knows.