I'm not sure about Eric though... He was back as a "consultant" / tech guy... But Nell was nowhere

Killbride was just great He can stay as the "adult" while Hetty is gone

Sabatino and his rock band dreams... Maybe it was a bit of personal history hidden there for the actor himself

That ending

Lastly, I'm not sure what's going on with Callen & Anna... But I felt like that young Callen was played by Chris' son... Will check it in a minute

Nope, it was an unknown young actor...