Penny Dreadful, which is filmed in Dublin and Wicklow, is coming to an end after three seasons and 27 episodes.
The season three finale aired in the US last night, with show creator John Logan and Showtime president David Nevins speaking to the press afterwards to confirm no more episodes will be made.
The show has not been cancelled, Logan himself made the decision to end the show at this point, telling US publication Variety "Some poems are meant to be haikus, some are meant to be sonnets and some are meant to be tone poems. And this was meant to be a sonnet. It just feels right to me."
Nevins added " This show was very effective and meaningful to us. I have a little bit of heartbreak over it. But ultimately every show I think has the right trajectory, and John convinced me that this was the right way to handle this show."
While it may come as a disappointment to fans of the show, it's a very brave decision to end a popular programme when it feels right creatively. There have been many shows that have ruined their own legacy by continuing far longer than they should have.
Logan will continue his association with the Showtime network with his adaption of Patti Smith's Just Kids, while star of the show, Eva Green, can be seen in the forthcoming Miss Peregrine's Home for Peculiar Children.
Irish viewers can tune into the final two episodes of Penny Dreadful when they air on Sky Atlantic tomorrow night.