SPOILER ALERT: The following Once Upon a Time sneak peeks are especially revealing.
Courtesy of Sunday's "The Doctor," they begin with a confrontation between Charming and Dr. Whale, their first interaction since the former learned an unwelcome tidbit about the latter and Mary Margaret. See his reaction to it here:
Next, we have a meeting between Emma, Snow and Killian Jones. Or, as the pirate is forced to admit, Captain Hook. Watch him come clean about his identity in the following clip:
Finally, in a continuation on what we learned in the episode's official promo, we witness Regina and Dr. Whale and the devastating secret these two have concocted together. Look out, Storybrooke...