: Amandine reveals she burned their "manifesto"—a symbol of their commitment—a year prior. She shows Jamie a recording that proves she knew about his secret affair with another woman before her own infidelities began.
: Jamie publicly confronts Amandine, expecting a confession or apology for her affairs with three different men, including his best friend and brother-in-law, Jeff.
The finale ends with a surreal scene where a massive whale appears in the middle of a road . This serves as a heavy-handed metaphor for the "mammal" theme, representing the literal and metaphorical weight of the secrets that have finally crashed into the characters' lives.
