I thought it was different in the sense that you see police personnel backing each other's lies and getting away with it, even with the best of (probable) intensions and the one sincerely seeking the truth holds the empty bag. The obvious (but admittedly unproven) way the people around her lied affected the protoganist so much she requested a transfer. A brilliant, young but inexperienced copper is given a second chance by her colleagues at the expense of a dead girl. For once TV land reeks of our gritty reality. The baddies can get away with it. And those pursuing and working for the truth, do not always get rewarded. That is systemic injustice for you.
For sure, who does'nt want Shaw and those complicit to be arrested? Is'nt our world already enough in the uneven way that justice and truth are treated and manipulated? And with those thoughts, that is why that last episode, no matter how messy, made me uncomfortable.