Lucien is a Parisian architect whose primary goal during the German occupation is his own survival. Frustrated by a lack of modernist commissions and struggling financially, he views the war strictly through the lens of personal inconvenience. When offered a lucrative but highly illegal job designing secret rooms for Jewish refugees, his greed clashes with his intense fear of the Gestapo. He slowly finds a sense of moral purpose as he begins interacting directly with the people he hides.

Manet is a wealthy aristocrat who builds his manufacturing fortune through business ventures. Raised by a Jewish nanny, he holds a deep personal commitment to rescuing people from the German forces. He uses his vast resources to operate a clandestine network of smugglers and safe houses, actively recruiting reluctant individuals to design infrastructure for his cause.

Herzog is an officer in the German Wehrmacht with a background in modern architecture. He possesses a deep appreciation for French art and culture, which allows him to bond quickly with civilian architects. Despite wearing the German uniform, he harbors complicated views regarding the brutality of the Gestapo and expresses discomfort with the regime's treatment of civilians.

Schlegal is a sadistic Gestapo officer stationed in Paris. He thoroughly enjoys the power his rank affords him and takes active pleasure in interrogating and terrorizing prisoners. Driven by intense prejudice, he becomes obsessed with tracking down a specific wealthy fugitive and locating the hidden rooms protecting his targets.

Bette works as the indispensable right-hand assistant at a Parisian fashion house. While she initially appears to simply enjoy the superficial perks of her beauty, she secretly holds strong moral convictions. She takes on dangerous responsibilities behind her employer's back.

Pierre is a thirteen-year-old boy who witnesses his caregiver's murder and his siblings' capture. Forced to mature quickly to survive the occupation, he becomes determined to embody traditional masculine strength. He remains fiercely vigilant against potential threats to his new guardian.

Adele is a successful fashion designer who leverages her attractiveness to maintain luxury during wartime rationing. She operates purely out of self-interest, taking lovers who can provide protection and status. She expresses open hostility toward those who risk their safety for the resistance.

Celeste is an educated woman trapped in an unhappy marriage, carrying the grief of past miscarriages and familial abandonment. She holds a degree in mathematics but feels isolated by wartime scarcity. She deeply resents her husband's moral compromises and his willingness to work on German contracts.

Alain is a recently graduated architect hired to help manage increasing workloads at a busy firm. He uses obsequious behavior to secure his position but secretly harbors resentment toward his boss. His familial ties to the Gestapo make his curious and snooping nature highly dangerous.

Janusky is a wealthy businessman who spends his personal fortune buying freedom for his persecuted peers. Having focused on helping others escape to foreign countries, he finds himself trapped in occupied France. He relies on local allies to keep him out of the hands of the authorities hunting him.

Lieber is a Wehrmacht officer tasked with overseeing industrial construction in Paris. He prefers practical, fast-paced work over artistic design, often demanding unreasonable timelines that require slave labor. He lacks the cultural appreciation shared by his subordinates.

Madame Charpointier is a caregiver sheltering Jewish children in her home. She bravely attempts to protect her wards by lying to the police and reciting Catholic prayers, demonstrating immense courage in the face of armed soldiers.

Father Jacques is a courageous priest who risks his life to save hundreds of children from the authorities. He maintains his sense of humor and religious conviction even when facing torture, refusing to view his life-saving actions as foolish.

Holweig is a Gestapo officer who utilizes his connections to secure employment and favors for his family. He relies on neighborhood tips to conduct raids and brutally interrogates suspects to win the approval of his superiors.

Voss is a subordinate Gestapo officer who performs brutal acts of torture under orders. He uses tools like soldering irons and wire cutters to extract information from suspects who are caught hiding fugitives.

Lischka serves as the head of the Paris Gestapo. He places immense pressure on his officers to produce results, fearing reprisal from higher commands if high-profile fugitives remain free.

Albert is a Jewish man forced into hiding to escape the German forces. He wears the mandatory yellow star and draws strength from historical tales of resistance, maintaining a polite and respectful demeanor despite his desperate circumstances.

Sophie is a fugitive hiding in an apartment to evade capture. She spends her time reminiscing about happier days, like vacations to Morocco, to cope with the extreme stress of confinement.

Solomon is a man constantly on the run from the authorities. He endures horrific physical conditions, including hiding in cramped spaces for hours, prioritizing his and his wife's survival over physical comfort or dignity.

Miriam is a fugitive traveling between temporary sanctuaries. She shares the terrifying reality of near-capture, enduring physical pain and fear while remaining perfectly silent during searches.

Henri is an unemployed architect struggling to find commissions during the occupation. When denied help by a former colleague, he turns vindictive, utilizing his connections to orchestrate revenge against those he views as traitors.