Sharon Horgan has revealed that the finale of Catastrophe will be "emotional".
The Channel 4 sitcom is coming to an end after its upcoming fourth season.
The Irish actress writes and stars in the show alongside American comedian and actor Rob Delaney, while the late Star Wars actress Carrie Fisher guest starred in the first three series of Catastrophe as the mother of Delaney's character.
Horgan has warned fans that the final episode will "mess with everyone's heads".
She said in an interview with Radio Times: "It's the last episode we're ever going to do, and I can tell you that it's a little bit of a tribute to Carrie Fisher.
"I can tell you that we really wanted to mess with everyone's heads. It's emotional, and it's a little bit longer than usual.
"All of Rob's family are there, and it's not in England. That's enough, right?"
Horgan also explained why she and Delaney decided to end the popular show after its fourth season.
She said: "We've been doing it for a long time - from the start of it to now it's probably six years - doing a show that we absolutely love, and getting to a point where we thought, 'Well, what if we can't think of something that's original and funny any more?'
"I would say writing episode four was maybe the hardest one in terms of coming up with stuff that felt original or new or like we had something new to say. So I think we just felt like, maybe, quit while we're ahead."
However, she did not write off a return to the programme, adding: "It doesn't mean that it's dead and over for good forever. But it just means that's it for now."