"Netflix has ordered a straight-to-series spy thriller starring Millie Bobby Brown and David Harbour, reuniting the ‘Stranger Things’ co-stars for the first time since the show’s 2025 finale, according to Deadline and Yahoo."
The project, titled Spy In the Blood, marks the first collaboration between Brown and Harbour since the conclusion of Stranger Things, which ended its five-season run in December 2025. The series, developed by Jack Thorne and A24, will follow disgraced FBI agent Matt Wolfe (Harbour) and his estranged daughter Rebecca (Brown), an FBI agent who disappears during a mission, forcing him to confront his past. Netflix’s head of scripted series, Jinny Howe, praised the duo’s “special bond” in a statement cited by both Deadline and Yahoo.
Creative Collaboration and Public Reconciliation
Reunion Against the Odds
The collaboration was unexpectedly announced in June 2026, with Variety reporting that Brown and Harbour had been teasing the project for months. “You’ll see more of me and Millie—10 years wasn’t enough,” Harbour told Variety, referencing their decade-long on-screen partnership. Brown added, “Father-daughter is where we live, but Netflix will always be our home,” a sentiment echoed in Deadline’s coverage. The series will also reunite Brown with Thorne, the writer behind Enola Holmes, which Brown produces.
The project’s announcement comes amid renewed public interest in the actors’ off-screen dynamics. Yahoo highlighted a 2025 Daily Mail story alleging that Brown had filed bullying claims against Harbour during Stranger Things production, a report Harbour called “false” and said “caused him to have breakdown.” However, both actors have since emphasized their reconciliation. In a Variety interview, Harbour noted, “In families, it’s OK because you’re just in a disagreement, and then you come back together.” Brown, in a statement to Variety, described their relationship as “much more collaborative creatively” over the series’ decade-long run.
Production Dynamics and Narrative Scope
Behind the Scenes Friction
While the series’ production team remains united, the actors’ past tensions have drawn scrutiny. Yahoo’s report cited a “rupture-and-repair” dynamic, with Harbour acknowledging that “the problem with a billion-dollar show is that there’s just hundreds of people who want to get involved.” Brown, however, emphasized gratitude for their time on Stranger Things, stating, “There’s still a lot of gratitude.”
The series’ logline, as detailed in Deadline, positions the characters as “estranged father and daughter on opposite sides of a crisis,” a narrative that mirrors their on-screen chemistry in Stranger Things. The show’s executive producers include Thorne, Joe Hipps, and PCMA’s Jake Bongiovi and Robert Brown, with A24 handling production.
Strategic Expansion for Netflix and the Stars
What’s Next for the Duo?
Brown, who has remained a Netflix staple since her Stranger Things debut, is set to star in Enola Holmes 3, releasing July 1, 2026. Harbour, meanwhile, recently appeared in HBO’s DTF St. Louis. Their upcoming project, however, signals a return to the streaming giant that launched their careers.
Netflix’s decision to fast-track the series underscores its confidence in the actors’ star power. Deadline noted that Stranger Things remains Netflix’s most popular English series, with Adolescence and Stranger Things 4 and 5 ranking in the top four. The spy thriller’s development also highlights Thorne’s continued influence, following his work on Adolescence and Enola Holmes.
Industry Implications
The project’s success could redefine the actors’ post-Stranger Things trajectories. For Brown, it offers a chance to expand beyond the sci-fi genre, while Harbour’s role as a disgraced agent may contrast with his iconic portrayal of Jim Hopper. Analysts suggest the series could attract viewers seeking emotionally driven thrillers, a niche increasingly popular on streaming platforms.
As production begins, fans await further details on the series’ release window and potential cast additions. For now, the reunion of Brown and Harbour—once a cornerstone of Stranger Things—signals a new chapter for both actors and Netflix’s content strategy.
"Netflix has given a straight-to-series order to a father-daughter espionage thriller starring Millie Bobby Brown and David Harbour, according to Deadline and Yahoo."
"Jack Thorne’s ability to find the deeply human story inside a thriller is unmatched, and watching Millie Bobby Brown and David Harbour reunite — this time as estranged father and daughter on opposite sides of a crisis — is something audiences are going to love," said Jinny Howe, Netflix’s head of scripted series, as reported by Deadline.
"Over time, our relationship became much more collaborative creatively," Brown said in an email to Variety, reflecting on their decade-long partnership.
"The David Harbour project is sooner than expected," Brown added, citing her collaboration with Harbour on the new series.
"Disgraced FBI agent turned security expert Matt Wolfe is drawn back into the world he left behind when his estranged daughter, Rebecca — now an FBI agent determined to follow in his footsteps — vanishes on a mission," according to the series’ logline in Variety.
"10 years wasn’t enough," Harbour told Variety, hinting at the project’s development.
"Father-daughter is where we live, but Netflix will always be our home," Brown said in a statement to Variety.
"The problem with a billion-dollar show is that there’s just hundreds of people who want to get involved," Harbour said in a Variety interview, addressing past tensions.
"Brown also said in a statement that over the course of Stranger Things’ five seasons… our relationship became much more collaborative creatively," according to Yahoo.
"Netflix has given a straight-to-series order to a father-daughter espionage thriller starring Millie Bobby Brown and David Harbour," as reported by Deadline.
"Harbour and Brown’s on-screen reunion comes six months after Stranger Things bowed out as Netflix’s biggest original series ever," according to Yahoo.
"Brown’s Enola Holmes 3 premieres on July 1, and Harbour starred on HBO’s limited series DTF St. Louis," per Variety.
"Thorne, Harbour and Brown will executive produce the series with Jake Bongiovi and Robert Brown for PCMA Productions," according to Variety.
"Netflix’s head of scripted series, US and Canada, said…
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