El Helicoide, a brutalist complex sitting atop a hill in central Caracas, is known as one of Latin America’s most notorious detention centers. Built as a shopping mall in the nineteen-fifties, the structure was taken over by Venezuela’s national-intelligence services, who turned its abandoned storefronts and lavatories into makeshift prison cells.

Early on Saturday afternoon, hours after American forces captured Nicolás Maduro, Amanda Monasterios sped off to El Helicoide. Her son, Jesús Armas, a prominent opposition leader, was among the political prisoners held inside. Monasterios, who is seventy-four, looked out at the capital’s eerily deserted streets: caraqueños had awakened to a bombed city, where people had been called on to begin la lucha armada. She arrived at El Helicoide to find that armed men had sealed off the premises. Patrol cars guarded the entrance—and there was no way to get near the prison. “It was as if the entire national police were guarding the approaches,” she said.

Her son had been in detention for just over a year, during which time Monasterios had been allowed to see him only occasionally. Clutching a bag of homemade food, she was prepared to step out of her car and seek a way into El Helicoide, but a companion advised her against it. “Don’t do it,” the person implored her. “We’ll come back on Wednesday.”

An engineer by training, Armas made a foray into politics as a student and was later elected a councilman in Caracas. He worked to address the city’s crumbling infrastructure, but it was his work in the general election of 2024 that drew the regime’s attention. After officials barred María Corina Machado, the opposition leader, from entering the race, she anointed a retired diplomat named Edmundo González to run in her place. Armas helped lead González’s campaign in the capital.

The election was mired in fraud: Armas, along with others, rallied hundreds of volunteers to observe the vote and preserve printed tallies from every voting machine. When polls closed, Maduro rushed to claim victory—a claim the opposition forcefully disputed, showing proof that González had won in a landslide. The regime never released a full count of the vote. Instead, officials engaged in a vicious crusade to repress whoever dared challenge the outcome.

On the morning of December 10, 2024, Armas was abducted from a cafeteria in eastern Caracas. It took almost a week—and a sustained public campaign—for him to be tracked down. Saimar Rivas, Armas’s partner and a longtime civil-rights activist, told me that he had been taken to a clandestine site run by the SEBIN, Venezuela’s intelligence agency. “There, he was tortured, asphyxiated with plastic bags, and questioned about the whereabouts of Edmundo, María Corina, and other opposition leaders,” Rivas said. “They offered him to become an informant, but he refused.”