When the show jumped the shark for me: The Carver reveal
Leading up to it, the producers said it would be a huge reveal and not the obvious. Great, I loved this show since the first episode, it was edgy, and didn't follow the rules.
I thought the perfect Carver would have been Erika, Julia's mother. She would have been a shocker and not the dickless surgeon (like, what???) or his weird ass sister cop. But nope, they JTS with an unbelievable let down. I still watched it to the bitter end, but it all went downhill after that.