*Cola de Mono* (2018) is a Chilean thriller-drama directed by Alberto Fuguet. Set on Christmas Eve in 1986, the story centers on Borja and his older brother Vicente, who share a tense relationship with each other and their mother. As the evening unfolds, simmering family tensions come to the surface, revealing secrets, desire, and personal conflicts. The film explores themes of sexual awakening, repression, and family dynamics, blending coming-of-age elements with dark suspense. *Cola de Mono* paints an atmospheric portrait of a family in crisis against the backdrop of a politically charged era in Chile.