AMC has canceled the science fiction series Humans after three seasons, according to Vulture. The series focused on a world where robots have been completely integrated into everyday life.

Writer and executive producer Sam Vincent along with creator and writer Jonathan Brackley announced the show’s cancelation on Twitter “sadly, there won’t be a 4th season of Humans,” Vincent and Brackley wrote. “In this age of unprecedented choice and competition, we can have no complaints. Channel 4 & AMC were the perfect partners. They supported the show brilliantly and above all – let us make three seasons!” They also wrote a note of appreciation for the fans “thank you so much for the messages, support, podcasts, bespoke mugs, and for never setting up a petition to make us redo something.”

Vincent and Brackley also wrote about the series’ unfinished ending “We know we left some threads hanging. That was the way we always wrote the show. Maybe one day we’ll get a chance to pick them back up. If there’s anyone out there with a few million quid and an interest in AI stories, we’re all ears. DM us Elon.”

Humans’ scary and unusual idea is Synth Anita and other humanoid robots like her that were brought into the homes and businesses to serve humans. Although, not all robots are the same. “We’re more the speculative science fiction of ideas, the kind that doesn’t go to other galaxies but puts the scary weird idea right in your living room,” said Vincent and Brackley.

The series’ cast included Gemma Chan (Crazy Rich Asians), Lucy Carless, Tom Goodman-Hil, Katherine Parkinson. According to TV Line, the cast also included Colin Morgan (Merlin), Will Tudor (Shadowhunters), Letitia Wright (Black Panther), Sam Palladio (Nashville), Marshall Allman (True Blood), and William Hurt (Damages).

Read the full announcement below:

Some #Humans news… #HumansC4 #HUMANSamc pic.twitter.com/Uw0Uxt0iCe

— Sam Vincent (@smavincent) May 20, 2019

The show aired its last episode in July 2018.