the name of Diann Fossey is a symbol. for profound dedication to her work, for the hard war for study and protect the gorillas population. this film is a homage. and, more important, a honest exercise to reflect about a life pillars. the seed of its success - extraordinary performance of Sigourney Weaver. because she has science, courage and force to do not only a credible character but a delicate, precise web from shadow and light. the empathy and the tension, the dedication and the veil of madness, the compassion and the admiration, each of them is used for create not an explanation for a death but to feel the entire pressure of story levels. it is a superb portrait and if, at beginning, it seems be a role for Colleen Dewhurst ( for physical resemblance ) or for chameleon Meryl Streep, Sigourney Weaver demonstrates, scene by scene, not only an impressive artistic potential but a beautiful measure of detail and exploration of subtle nuance.