Gavin & Stacey did explain what happened on that mysterious fishing trip, but the scene was deleted before it aired.
The popular BBC comedy returned on Christmas Day for a one-off episode, with 11.6 million people tuning in to watch the special.
However, many were left wondering what exactly went on during Uncle Bryn's fishing trip with his nephew Jason - a plot that has remained a mystery for years.
During the Christmas Special, fans thought they were about to hear what really took place that day, but just as Bryn was finally about to tell the cast what happened, he was interrupted by the children.
It's now been revealed the show's writers Ruth Jones and James Corden - who star as Nessa and Smithy - had originally planned to explain the fishing trip in series two, but ended up changing their minds about the idea.
Lisa Edwards, who owned the house the show used as uncle Bryn's home, still has a script of the episode that millions of fans want to watch the most.
She told Wales Online : "We have a script for an episode which was never aired.
"It was supposed to be Uncle Bryn and his nephew watching this VHS."
She added: "They both watch it together to see what happened on the fishing trip. But they decided to not show the episode."
Fans were once again left without an answer on what happened during the trip as the mystery continues to intrigue millions of viewers.
James and Ruth's heartwarming creation became the most-watched Christmas special since 2008, and secured a 49.2 per cent audience share, according to the BBC.
Delighted viewers took to Twitter to rave about the comeback, which saw Matt Horne and Joanna Page reprise their roles as the title characters, with James and Ruth playing Smithy and Nessa.
But after the episode ended on a cliff-hanger, fans are wondering if another episode could be in the works.
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