This HBO Films presentation is a fascinating portrait of one man's descent into the delusions of a fractured mind. David Oyelowo ("Selma", "Lee Daniels' The Butler", "Lincoln") gives a spellbinding, roller-coaster ride of a performance as Peter, the sole character in the film, a war veteran struggling with the aftermath of a desperate act. Yearning to rekindle the relationship of a friend whom he served with, Peter goes on a psychological journey to regain control of his life and free himself from the burden of his demons. Told with incisive imagery, energy and humor, "Nightingale" is a compassionate depiction of isolation in the midst of a world ruled by social media.