Writer and director Mike Bartlett said: "I've been astounded by the response to Doctor Foster. So I'm thrilled that alongside [production company] Drama Republic and the phenomenal Suranne Jones, we're now going to tell the next chapter in Gemma's story.
“Her life in Parminster may look better on the surface, but as she will discover to her cost, every action has its consequences eventually. No one comes through hell unscathed."