I fell in love with this show. 
I started watching it by chance out of curiosity. I seen a bit of one episode on TV and it interested me so I decided to download the first two episodes to give it a try. I then downloaded a couple more and loved them. So I ended up watching every episode. I like all of the main 6 characters so I can’t really pick a favourite from them.
It is such a well written show with excellent stories and characters.