'Once Upon a Time' season 6 spoilers: Emma and Aladdin help Agrabah in episode 6; Sean Maguire hints how Robin Hood will return

Emma (Jennifer Morrison) asks Aladdin (Deniz Akdeniz) to reconnect with Jasmine (Karen David) and learn what happened to Agrabah, while in the past, Hook (Colin O'Donoghue) gets kidnapped by the mysterious Captain Nemo (Faran Tahir) in the upcoming episode of ABC's fantasy drama "Once Upon a Time" season 6.
Titled "Dark Waters," next week's episode will see one character's life in danger. According to the official synopsis for episode 6, Emma convinces Aladdin to work with Jasmine in helping Agrabah. Elsewhere, Regina (Lana Parrilla) teams up with Snow (Ginnifer Goodwin) and David (Josh Dallas) to fight against Zelena (Rebecca Mader) and free Archie (Raphael Sbarge) from her. Despite Mr. Gold's (Robert Carlyle) efforts to remind the Evil Queen (also played by Parrilla) of his most important lesson, she continues to grow suspicious about Henry (Jared S. Gilmore) and Hook. Meanwhile, in the past, Hook finds himself kidnapped by the mysterious Captain Nemo and held captive inside his submarine, the Nautilus.
On another note, it was previously announced that Sean Maguire will be back as Robin Hood for multiple episodes this season. For the uninitiated, the beloved character died last season when he sacrificed himself to save Regina. Speaking with Entertainment Weekly, Maguire revealed that Robin Hood won't be coming back to life, but his appearance will somewhat give fans closure. The actor also clarified that he will not be returning via flashback.
"I mean in all honesty, I've had conversations with the chaps [Executive producers Adam Horowitz and Edward Kitsis], we've had creative discussions about how Robin would be able to come back, and I said, 'Look, I just feel like... it would make me feel unsatisfied as an audience member to do it as flashbacks,' and they said, 'No, that's not our intention,'" he explained.
Catch all-new episodes of "Once Upon a Time" season 6 airing every Sunday night at 8 p.m. ET on ABC.