Fans of ABC's Once Upon a Time who are wondering who Captain Hook (Colin O'Donoghue) traded his ship with in Season 3 may not get an answer for a while.

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In a new TVLine spoiler report, a fan asked if Season 4 would include an answer to whom Hook traded his Jolly Roger. O'Donoghue does not seem to be confident that it will happen anytime soon.

"It's definitely something I myself am wondering," O'Donoghue told TVLine, having shot three episodes of Season 4. "I would be intrigued to see exactly what happened there . . . The Jolly Roger was his life for 300 years!"

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In Season 3, just before the second curse was enacted, Hook was able to get out of its perimeter and trade his ship for a magic bean, which allowed him to go to the Land Without Magic.

While it does not seem like this will be addressed right away, anything is possible with Once Upon a Time. With an expected 22 episodes, it could definitely be brought up again at some point.

In the mean time, the series will be introducing the world of Frozen to Storybrooke. Among the characters from Disney's massive hit Frozen who will be in Once Upon a Time next season include Elsa (Georgina Haig), Anna (Elizabeth Lail), Kristoff (Scott Michael Foster), Hans (Tyler Jacob Moore) and Pabbie, the elder troll (voiced by John Rhys-Davies).

Once Upon a Time Season 4 is set to premiere Sunday, Sept. 28 at 8 p.m. on ABC.

Tags: Once Upon A Time television ABC