Ellen Domingos as Detective Rosa, No nonsense, by the book kinda cop with a maternal bent. She is fit and sexy. Can look great in pants and a blazer by day, and is just as comfortable in a tight red dress at night. Years of fending off not so subtle sexism have made her the least favorite cop at the precinct. Justice's partner, on the job they are a well oiled machine. Off the job things between them get messy.