Una nit de carnaval by Joaquín Dimas is a one-act comic play in verse from the mid-19th century. Set during Barcelona’s Carnival night, it centers on jealousy, marital suspicion, and neighborhood prankery as a pompous barber’s fears spark a chain of misunderstandings. The barber, Sr. Climent, blusters home after being mocked by masked revelers, while his young wife Teresa secretly plans to meet her brother Salvador to complain about her husband’s corrosive jealousy. Salvador climbs in by the balcony under cover of darkness; confusion erupts as Climent prowls, mistakes sounds for infidelity, and the two men collide in the dark. Teresa slips out and locks Climent in, neighbors rush in, and the humiliated barber “captures” only a shop dummy. A letter from Teresa declares she remains faithful but will not endure his baseless suspicions. When Teresa and Salvador return, they demand Climent reform; he publicly promises trust and grants her freedom of movement, and the quarrel ends in reconciliation.