Political, sexual and emotional gamesmanship come together among a handful of young bohemians in this drama from Argentinean filmmaker Matías Piñeiro. Helena (Romina Paula) has invited a number of her friends to spend a few days at her home in on the outskirts of Buenos Aires. Helena's is the great-great-granddaughter of Domingo Sarmiento, one of the nation's key progressive political figures during the 19th Century, while her guests include Joaquin (Esteban Lamothe), a self-obsessed artist who is descended from Juan Martin de Rosas, the iron-fisted leader of Argentina during the same era as Sarmiento. Helena encourages her friends to indulge their creative impulses, and musician Mónica (María Villar) and painter Isabel (Julia Martinez Rubio) share their ideas with everyone, while romantic assignations and elaborate pranks are common among the circle of friends. But old family rivalries die hard, and Helena has an ulterior motive for inviting Joaquin to the gathering -- to humiliate and destroy a man whose ancestors were the bitter rivals of her great-great-grandfather. Todos Mienten (aka They All Lie) as an official selection at the 2009 BFI London Film Festival.