Robert Carlyle, 53, returned to Canada to film the fourth season of the hit series, 'Once Upon A Time', and was photographed having trouble carrying his luggage.

"What a fantastic response to last night's finale. So happy you enjoyed it. Always a pleasure to perform such lovely material. See you in S4 xx," Carlyle posted on his Twitter account in May after the Season 3 finale was shown.

Prior to filming the series' Season 4, Carlyle just finished filming 'The Legend of Barney Thomson', which he shared on Twitter.

Meanwhile, the fourth season of 'Once Upon a Time' will premiere in September with a 'Frozen' theme.

Queen Elsa, the popular Disney "ice queen," will be joining the cast of 'Once Upon a Time' in its new season.

In the plot, the "ice queen" is shown to have been trapped in the past in Rumplestiltskin's dungeon, but she escaped and she came through to the present time with Emma and Hook.

The new season will focus on Emma, Snow White, Prince Charming, the evil Queen, Hook and all the other characters while they face the "ice queen."

Elizabeth Mitchell, more popularly known for her role in 'Lost', will be joining the cast. Her role has not yet been confirmed, but reports say that it will be connected to 'Frozen'.

Other characters who were cast for the new season include 'Fringe' star Georgina Haig, who will play the role of Elsa. Elizabeth Lail will play the role of Anna, while Scott Michael Foster was cast for the role of Kristoff.

"Well, it's funny, we're not going to redo the movie, because we just don't feel like it's in anyone's interest for us to redo it," said "Once Upon a Time" co-creator Adam Horowitz, according to E! News, "But what we are going to do, we're not ready to tell you. But what we can say is we're very aware of what we think makes this character from 'Frozen' so special and we want to honor that and make sure that what we do is in the universe of everyone fell in love with this past year."