When season five of Chicago P.D. returns, there will be a new female member of the Intelligence Unit who also happens to be partnered with Jesse Lee Soffer’s Det. Jay Halstead. However, new series regular Tracy Spiridakos insists she’s not stepping into the shoes left by Sophia Bush, who departed the cop drama in May after four seasons. In an interview with the Hollywood Reporter, Spiridakos said, “I don’t think of it as stepping into it, I think of it as stepping aside,” about joining the series full-time in season five.