I love this show! From the very first episode to the last of season 2 which I just finished, I've been hooked.
The characters are a mixture of relatable, lovely, secretive, funny and caring. The ongoing plot of what happened so many years ago is extremely intriguing and little parts manage to tie in to current day events but don't take over. So you're not pulled in two different directions and unfocused, instead you're invested in both.
The dynamics/interactions between all the characters are believable and endearing. I hope it's picked up for a 3rd season and beyond!