Since then Icíar Bollaín has acted in fourteen films. At age 18, with her twin sister Marina, she was cast by their uncle Juan Sebastián Bollaín in two films: "Las dos orillas" (1987); several years later the twins appeared in "Dime una mentira" (1992). Icíar Bollaín also took roles in films directed by Felipe Vega, Manuel Gutiérrez Aragón and José Luis Borau. Her red hair was partly what led Ken Loach to choose her for his film, "Land and Freedom" (1995), about the Spanish Civil War. Her experience working with Loach led her to write the book: "Ken Loach: un observador solitario."