Once Upon a Time is back on Sunday with a new episode, 5×10 ‘Broken Heart’, and ABC has released some promotional pictures.

SPOILERS

These images and the following text contain major spoilers from the episode 5×10 ‘Broken Heart’ of OUAT, which airs on Sunday, November 29th on ABC.

Every new detail of the upcoming episode reveals that it will focus in Hook becoming the Dark One, as you can find some very interesting information in the following synopsis as well as in the new trailer (watch here).

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Plot summary – In Storybrooke, Hook (Colin O’Donoghueseeks revenge on Rumple (Robert Carlyleand challenges him to a dual. In Camelot, Hook kills Merlin (Elliot Knight) to set the curse and Emma (Jennifer Morrison) erases everyone’s memories in a attempt to fix the situation. Original airdate November 29th, 2015.

Click them to enlarge (new window).

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Pictures Courtesy of ABC.