Doctor Foster (TV series)

Doctor Foster is a British psychological thriller television series inspired by the ancient Greek myth of Medea which debuted on BBC One on 9 September 2015. Created and written by Mike Bartlett, it stars Suranne Jones as Gemma Foster, a doctor who suspects her husband Simon (Bertie Carvel) is having an affair.

The second series started on 5 September 2017 and concluded on 3 October 2017. A future third series was played down by Jones, citing incompatibility of schedules. Bartlett said while there is more to explore with Gemma Foster's story, he would bring the show back only if there were a vital story to be told. He did, however, write a spin-off, Life, featuring the character of Anna Baker from the first two series. On 25 February 2026, it was confirmed that the show would be returning for a third and final series.