US viewers in million
“Broken” – September 30, 2012 11.36 (season premiere – Aurora, Mulan introduction)
“We Are Both” – October 7, 2012 9.84 (Regina’s backstory)
“Lady of the Lake” -October 14, 2012 9.45 (Cora’s back)
“The Crocodile” – October 21, 2012 9.89 (Rumple’s backstory – Hook’s introduction /see the ratings exploding drastically here/)
“The Doctor” – October 28, 2012 9.85 (revelation of who Dr. Whale is – Hook)
“Tallahassee” – November 4, 2012 10.15 (Emma’s backstory – Neal introduction, introduction of the giant, Hook, Mulan, Aurora)
“Child of the Moon” – November 11, 2012 8.75
“Into the Deep” – November 25, 2012 8.82 (Hook, Cora, Mulan, Aurora)
“Queen of Hearts” -December 2, 2012 9.10 (midseason finale – Hook, Cora, Mulan, Aurora)
“The Cricket Game” – January 6, 2013 9.10 (midseason premiere – Hook, Cora)
list source Wikipedia (original sources are “TV by the numbers” and “The Futon Critic”)
***
Well, I can clearly not see why you’d assume that other casting member’s or casting additions weren’t raising the viewer numerary. And also why you’d denote that Hook is displacing them by far, because that’s obviously not the case.
It’s self-evident that he might have conducive a great amount of viewers and I’m really grateful for that only inured to the benefit of the show, but he is NOT the only one who does! Sigh.