I absolutely love this show. It's one of the few series that I have watched all seasons without getting bored at any point.The storyline, the characters and especially they way they explain the background of all characters & show us their lives beyond policing is what makes this show one of a kind.
I was a bit sceptical when they brought on Nyla Harper but the writers are so great that they made me fall in love with her character easily.
Tim & Chen are probably the weird couple for me. I think they were better in their Mentor & Mentee relationship. However, their romantic relationship is not as awkward and odd as I initially thought.
Again, I highly recommend this show!