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Who Is Erin Carter? a Review of Netflix’s New Thriller Series and Much More

Alexander Ross • Sep 25, 2026 • 6 min read

Who is Erin Carter? is a seven-part Netflix series that follows the life of a British expat teacher living in Barcelona, who has a mysterious past that comes back to haunt her after she gets involved in a supermarket robbery. The series was created by Jack Lothian, who also wrote for Doc Martin and Strike Back, and stars Evin Ahmad, Sean Teale, Indica Watson, Douglas Henshall, Denise Gough, and Jamie Bamber. It came out on Netflix on August 24, 2023.

The Plot

Who is Erin Carter begins with Erin Carter (Ahmad) fleeing from England with her young daughter Harper (Watson), leaving behind a mysterious threat. Five years later, they are settled in Barcelona, where Erin works as a substitute teacher at an international school and Harper attends as a student. Erin’s husband Jordi (Teale) is a nurse who is unaware of his wife’s secrets.

One day, Erin and Harper go to a supermarket where they witness a robbery by two masked gunmen. Erin uses her impressive fighting skills to subdue one of the robbers, but he recognizes her and says “It’s you” before dying. The other robber escapes and starts stalking Erin, who realizes that her past is catching up with her.

Erin tries to keep a low profile, but her heroic act attracts media attention and police investigation. She also faces trouble from Penelope (Charlotte Vega), a wealthy neighbor and the mother of the boy whom Harper beat up at school. Penelope wants Harper expelled, but Erin has some dirt on her that she can use as leverage.

Erin’s neighbor Emilio (Pep Ambròs), who is also Jordi’s best friend and a police detective, is assigned to the robbery case. He becomes suspicious of Erin’s actions and background, and starts digging into her history. He discovers that Erin is not her real name, and that she was involved in a covert operation that went wrong five years ago.

Meanwhile, Erin is contacted by Lena (Denise Gough), a woman from her past who claims to know what happened to her and why she had to run away. Lena offers to help Erin escape from the people who are after her, but she has her own agenda and motives.

As Who is Erin Carter progresses, we learn more about Erin’s past, the operation she was part of, the people who betrayed her, and the secrets she has been hiding from her family and friends. We also see how Erin tries to protect herself and her loved ones from the dangers that surround them, while facing the consequences of her actions.

The Cast

The cast of Who is Erin Carter? features actors from different countries and backgrounds, reflecting the diversity of Barcelona and the international school setting. Here are some of the main cast members and their roles: