This was an entertaining season opener.
The Marcy & Gibbs speculation was fun to watch with knowing that they're RL couple..
I'm undecided about Knight, she had her moments that I liked, but I need to see more of the character before being fully okay with the agent change.
I'm intrigued about the serial killer, and McGee was good at decision making. I'm pretty sure that Gibbs is not coming back as a special agent, he will be just there for the team.
Also it was a nice nod that McGee went through his old "rules notebook" just to find Rule 91...