The new Brazilian miniseries Radioactive Emergency is getting ready to show viewers a tragic moment from the country’s history. The show, which is inspired by the real-life Cesium-137 accident in Goiânia in 1987, will start streaming on Netflix on March 18. As the release date gets closer, many people want to know more about the actors who are bringing this dramatic story to life.
The series focuses on the serious event that happened when a radioactive device was taken from a scrapyard. This led to a major public health crisis. The cast includes well-known Brazilian actors, with Johnny Massaro playing the lead role. The production comes from Gullane, the same studio behind other Netflix hits like Senna and Sintonia.
Johnny Massaro Steps Into the Lead Role of Márcio
Johnny Massaro takes on the central character of Márcio in the series. He is a familiar face to Brazilian audiences, having appeared in popular shows like Deus Salve o Rei and Verdades Secretas 2. His character is at the heart of the story as the authorities and scientists work against time to control the spreading contamination.
Massaro leads a cast filled with experienced performers. The choice of Massaro for this key role shows Netflix’s focus on bringing serious dramatic talent to this historical retelling.
Full Cast List for Radioactive Emergency
The streaming service has put together a large group of actors to tell this story from many different viewpoints. Alongside Johnny Massaro, the cast includes several respected names from Brazilian television and film.
Paulo Gorgulho plays the character Orenstein. Gorgulho is known for his work in Segunda Chamada and Pantanal. Tuca Andrada, who has appeared in Wandering Heart and A Magia de Aruna, takes on the role of the Governor. This character likely represents the official response to the growing disaster.
Bukassa Kabengele plays Evenildo. Kabengele has been seen recently in Mania de Você. Ana Costa is part of the main cast as Antônia, and Alan Rocha plays João. Rocha was previously in Amor Perfeito.
The cast also includes Marina Merlino as Catarina, William Costa as Darlei, Antonio Saboia as Eduardo, Luiz Bertazzo as Loureiro, Clarissa Kiste as Paula, and Douglas Simon as Souza.
Special Appearances Add Star Power
The series also brings in two well-known actors for special appearances. Leandra Leal appears as Esther, and Emílio de Mello plays César. Their involvement adds more depth to the storytelling, showing how the event affected different people across Goiânia.
The Real Story Behind the Series
Radioactive Emergency is not just a made-up drama. It is based on the true events of the Goiânia accident, which is considered the worst radiological disaster outside of a nuclear power plant. The incident began when scavengers took apart a radiotherapy machine at an abandoned clinic and sold the glowing Cesium-137 capsule to a scrapyard.
Many people came into contact with the material, leading to several deaths and widespread contamination. The series shows how physicists and doctors worked hard to save lives and clean up the city. The director, Fernando Coimbra, explained why this story matters.
“Radioactive Emergency rescues, through fiction, a historical event almost forgotten in the country, but one that says a lot about us as a nation. The narrative has multiple points of view and is led by the victims, doctors, and physicists. The latter are unusual protagonists in our dramaturgy. It is also rare to have a thriller series that is not about cops and robbers, but about ordinary people dealing with an extraordinary event.”
Coimbra leads the directing team along with Iberê Carvalho. The series was created by Gustavo Lipsztein, who also worked on the screenplay with Rafael Spínola, Fernando Coimbra, Stephanie Degreas, and Fernando Garrido. Caio Gullane and Fabiano Gullane produce the project through their company, Gullane.
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Production and Release Information
Radioactive Emergency is a limited series that will be available on Netflix. The episodes are expected to run about 42 minutes each. The show has been in production since at least mid-2025, with filming starting around that time.
For viewers around the world, the series will be available on the platform starting March 18, 2026. The release is global, so audiences in the USA, UK, Canada, Australia, and India can watch it with subtitles or dubbing. Netflix has been promoting the show with a trailer and behind-the-scenes footage that came out in early February 2026.
The behind-the-scenes video showed interviews with the cast and crew. They talked about the difficulty of telling a story based on real events and the tense atmosphere in Goiânia during the late 1980s. The video also highlighted how Brazilian scientists and medical teams became heroes during the crisis.
With its strong cast and important true story, Radioactive Emergency looks to be a significant release for Netflix this March. The combination of Johnny Massaro leading the cast and the experienced production team at Gullane suggests a series that treats its serious subject with care.
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