Episode 5 of "Under a Dark Sun" kicks off with a tense scene as Valentin steers Leo, Noor, and Alba towards a desolate cliff-edge, isolated from civilization. It is at this precipice that the stunning revelation unfolds: Valentin is the mastermind behind Alba's harrowing ordeal of being buried alive in a casket and knocked unconscious. He is also the culprit behind the sinister camera room, where those innocent girls were viciously exploited. His need to keep a close watch on Alba propelled him to orchestrate these heinous acts. Moreover, he callously murdered the detective right before their eyes, albeit with the aid of an unseen accomplice, evidenced by the continued gunfire while he was crouched. Amidst the chaos, Alba and Noor seize the moment, escaping and retaliating with fatal stabs, bringing Valentin's reign of terror to an abrupt end.
Yet, the question lingers: who was Valentin working for? Alba, now determined to do what's right, heads to the police, where the detective uncovers the depth of Valentin's deceit. They deduce that he illegally accessed Arnaud's computer to send Alba the incriminating email and meticulously set up the cameras, which were finally discovered after a thorough search of the premises.
Valentin's criminal enterprise was both chilling and calculated. Each season, he preyed on the most vulnerable field workers, posing as their protector. In truth, he drugged them and offered them to his clients like commodities. Despite serving two years for procurement, upon his release, he assumed a new identity and vanished, ultimately landing at the estate where background checks seemed to be merely a formality. This oversight does little justice to the police's competence, considering they had been combing the property and had waited five episodes to uncover any pertinent information regarding the workers. Their search of Alba's house, including the cameras cleverly concealed behind frames, had eerily missed the mark.
Meanwhile, Beatrice awakens to find herself confined within the stark walls of a psychiatric ward. Heavily sedated, she struggles against the facility's staff, who are swift to maintain her confinement. Granted a single phone call, she seizes the opportunity to reach out to Lucie, her voice tinged with desperation and urgency.
Yet, Lucie remains unperturbed and seemingly indifferent to it all. She pirouettes around the kitchen as she prepares breakfast, only to be abruptly interrupted by Ollie's unexpected arrival, which catches her off guard. Meanwhile, Beatrice's plight shows no signs of improvement. She attempts to articulate her situation to the meticulously scrutinizing doctor at the ward. Evidently, Beatrice harbors a deep sense of betrayal from her children, feeling discarded and imprisoned. Her erratic demeanor, exemplified by hurling the doctor's papers to the floor, suggests that her departure from this institution is far from imminent.
But fate takes an unexpected turn when Beatrice is reunited with Josephine, a figure from her past harboring a vengeful grudge. During lunch, driven to extremes, Beatrice snatches a fork and plunges it into Josephine's hand. This violent act serves as Beatrice's breaking point. That very night, she manages to escape her confines and confronts Josephine, asserting that she is not the adversary and yearning for answers about her plight.
Elsewhere, Mathieu discovers a mutiny among his workers, who are abandoning the estate and refusing to serve him. Displeased and plummeting into despair, Mathieu drowns his sorrows—or rather, indulges heavily in cocaine. Lucie's discovery of this does little to alleviate her frustration. She reminds Mathieu of their ongoing business ventures and the journalists lurking around, eager for a statement.
Alba unburdens herself to Leo about Dimitri's transformation into a menacing figure. She recounts how he turned aggressive and began assaulting her, only for her to push him away. Tragically, he stumbled backwards and lay motionless on the ground. Leo's anger ignites upon learning this, tears streaming down his face as he insists that Alba leave.
Alba then returns to the heart of the melodrama. She suspects that Valentin did not act alone and believes this saga might be intertwined with her mother's past. She postulates that Arnaud impregnated one of the flower pickers twenty-five years ago. This revelation could be their sole opportunity to uncover the truth and put an end to this saga once and for all.
As she rummages through Arnaud's possessions, she meticulously scans the employee details until her eyes alight upon a photograph of her mother. Confronting Mathieu with this discovery, she demands the unvarnished truth. To her astonishment, she also realizes that her own file is missing, a realization that Alba has already pieced together. Suspicion clouds her mind; she concludes that Mathieu must have murdered Arnaud and framed Alba for the crime.
Yet, her assumptions prove to be drastically misplaced. The revelation unfolds like a twisted tale—Arnaud is not her father, but Mathieu is. Mathieu, who, despite turning her over to the authorities, became consumed by an insatiable curiosity to uncover the truth about her. In a moment of desperate clarity, he stealthily procured some of her belongings, conducted a DNA test, and learned the startling fact. Prior to her appearance, he was blissfully unaware of her existence, and he vows that he holds no hand in this dark drama.
The name of her mother echoes through her mind—Nadia. Mathieu had even contemplated abandoning his wife, Josephine, to be with Nadia. That night, Beatrice phones Alba, her voice trembling as she reveals that her mother lies in Ward 102. But upon her hurried arrival, Alba's heart plunges into icy despair; Beatrice lies sprawled on the cold floor, a knife wound marring her body.
