Millie Bobby Brown and David Harbour Reunite for a New Netflix Series

The beloved Stranger Things duo are bringing their dynamic chemistry back to Netflix in a brand new project inspired by Paul Warner's novel.

Published 8 November 2026

Reuniting the Iconic On-Screen Duo

Fans of Netflix's landmark sci-fi hit can rejoice as Millie Bobby Brown and David Harbour are slated to share the screen once again. During their tenure on Stranger Things, the pair portrayed Eleven and Jim Hopper, capturing the hearts of millions worldwide.

Their powerful performances earned both actors back-to-back Primetime Emmy nominations. As the hit series reached its conclusion, viewers wondered when they might see the two talented performers collaborate again.

A New Project Inspired by Paul Warner

In June 2026, Netflix officially announced that Brown and Harbour would star in an upcoming series titled A Spy in the Blood. The project is loosely adapted from the debut novel written by Paul Warner.

The creative helm belongs to Jack Thorne, an Emmy-winning writer known for Adolescence and for producing Brown's Enola Holmes films. His involvement signals a high-caliber dramatic experience for subscribers.

Character Dynamics and Plot Details

The narrative follows Matt Wolfe, a disgraced FBI agent turned security expert portrayed by David Harbour. Matt finds himself dragged back into the clandestine world of espionage when his estranged daughter disappears during a mission.

Millie Bobby Brown steps into the role of Rebecca, Matt's daughter who is an FBI agent eager to follow in his footsteps. This adult dynamic introduces a fresh and mature relationship compared to their previous dynamic.

Parallels to Hopper and Eleven

The premise of A Spy in the Blood bears striking similarities to the foundational bond between Hopper and Eleven. In Stranger Things, Hopper was a broken and grieving man forced into protecting a mysterious girl with extraordinary abilities.

While Eleven was a child needing a father figure, Rebecca is an adult agent in the new series. Nonetheless, the core theme of a protective father figure thrown into peril to save his child remains a central pillar.

Comparisons to Hit Series

Industry observers have noted tonal comparisons between Matt Wolfe and Gary Oldman's character Jackson Lamb from Slow Horses. Both feature washed-up former spies reluctantly returning to past lives.

However, unlike the professional motivations seen in spy thrillers, A Spy in the Blood leans into deeply personal stakes. This emotional core draws closer comparisons to Jack Thorne's hit Netflix series Adolescence.

Anticipation for a Spiritual Successor

Given the massive streaming success of shows like Slow Horses and Adolescence, expectations are high for this new adaptation. The blend of espionage and personal stakes offers a compelling recipe for success.

Audiences are eager to witness how Brown and Harbour navigate a brand-new genre together. Their established chemistry provides a rock-solid foundation for the upcoming series.

News Overview

Netflix announced in June 2026 that Millie Bobby Brown and David Harbour will star in the upcoming series A Spy in the Blood, inspired by Paul Warner's novel and created by Jack Thorne. The show follows a disgraced FBI agent searching for his missing daughter, offering a spiritual successor to the dynamic shared by the actors in Stranger Things.

Key facts

  • In June 2026, Netflix announced a new series titled A Spy in the Blood.
  • The series stars Millie Bobby Brown and David Harbour.
  • The project is loosely inspired by Paul Warner's debut novel.
  • Jack Thorne is the creator and writer of the series.