Birth

Anna is a young widow who is finally getting on with her life after the death of her husband, Sean. Now engaged to be married, Anna meets a ten-year-old boy who tells her he is Sean reincarnated. Though his story is both unsettling and absurd, Anna can't get the boy out of her mind. And much to the concern of her fiancée, her increased contact with him leads her to question the choices she has made in her life.

Birth is a 2004 film directed by Jonathan Glazer and starring Nicole Kidman, Lauren Bacall, Danny Huston and Cameron Bright. The story is about a young widow from a prominent Manhattan-based family named Anna (played by Kidman) who slowly becomes convinced that her husband, Sean, who died ten years previously, has been reincarnated in the form of a 10-year-old boy also named Sean (Bright). At first Anna is skeptical, but Sean's intimate knowledge of their past makes her think twice.

Source: Wikipedia