Three days after Torrens' abduction, City of Shadows' Episode 3 unfurls with the killer's chilling call to Mauricio at Laribal Gardens, where he drops a video. At the office, Bruno professes his loyalty to Milo, while Bastos suspects Milo of being the leak. Singla cautions Rebeca against working with Milo, labeling him a madman, but she brushes off his warning. Milo, consumed by a relentless drive to uncover Marc's death, brushes aside office politics. Kata, Marc's girlfriend, insists everything was hunky-dory and no one could fathom Marc's true motivations.
Rebeca delves into Pinto's past and discovers that the city's ambition to open up access to the sea led to the demolition of the coastal area in the 1980s. Pinto was the mastermind behind the redevelopment, displacing people from their homes. The suspect emerges: Joan Grau, an activist with a history of activism. Singla merely updates Rebeca on Joan's background, but she can't help but reach out to Milo.
Joan and his family hail from a low-income neighborhood plagued by housing and employment issues. Joan lost his home to Pinto's company and publicly vowed vengeance against the CEO. The arrest of Joan sparked a riot, followed by constant protests.
Meanwhile, Milo grapples with a personal crisis as he realizes he's relying on medication for his mental health, mirroring Marc's path. He worries he might follow in his nephew's footsteps, but his wife, Irene, is unconcerned. She appears, bright and flirty, under the guise of urging him to sell the house.
Turning to Joan's interrogation, before Pinto's murder, Joan burned a Pinto dummy from a balcony. He claims to be the killer and that the Rose of Fire will continue to rebel against the oppressors. Milo improvises, arguing that Joan isn't clever enough to torture and kill Pinto in such a symbolic manner. Instead of yielding any intel, Joan heads towards Milo with a headbutt and is promptly detained.
Rebeca concurs that Joan exudes a loud, impulsive demeanor, lacking the subtle mastery required for intricate schemes. Singla persists in urging Rebeca to step away from Milo's case, suggesting a work-from-home arrangement as a compromise. But Rebeca resists, opting instead to check in on Milo, bringing him sustenance and sleep aids while they binge-watch Mauricio's channel. The reporter airs a chilling video, revealing the killer tossing money at Torrens—a display of power that Rebeca deconstructs with chilling precision.
With leads dwindling, the police team fans out to survey various Gaudi structures. Milo and Rebeca stake out an unfinished church, where a heart-to-heart session unfurls. Rebeca, yearning for a fresh start in Barcelona after her mother's cancer loss, finds solace in the present moment. Milo, on the other hand, is adrift, his police work serving as a lifeline. As Rebeca drifts off to sleep, she awakens to find Milo perched on the edge of an open balcony, his scoffing laughter a mix of concern and disdain.
The case remains stagnant, and the cops are called off. The scene shifts to Passeig de Turull in Parc Guell, where an elderly woman glimpses a van and a man. The man panics, fearing her keen gaze despite her poor eyesight. Her home, adorned with a protest poster, hints at her political leanings. The man—resembling an accomplice—and the killer hide behind the van, where someone is tied up, their shadows casting a sinister light on the proceedings.
