All 14 episodes from the second season of the sci-fi television drama set a decade prior to events in the original 'Star Trek' series. The show follows the missions and adventures of the crew aboard the USS Discovery as they navigate the ongoing war between the Klingons and the United Federation of Planets. In this season, the Discovery receives a distress call from the Enterprise, Spock (Ethan Peck) admits himself to a psychiatric facility and Burnham (Sonequa Martin-Green) attempts to use dark matter to rid Tilly (Mary Wiseman) of a parasite. The episodes are: 'Brother', 'New Eden', 'Point of Light', 'An Obol for Charon', 'Saints of Imperfection', 'The Sound of Thunder', 'Light and Shadows', 'If Memory Serves', 'Project Daedalus', 'The Red Angel', 'Perpetual Infinity', 'Through the Valley of Shadows', 'Such Sweet Sorrow: Part 1' and 'Such Sweet Sorrow: Part 2'.