All 23 episodes from the third season of the adventure drama starring Melissa Benoist as the DC Comics superheroine. Since being sent to Earth as a young girl to protect her cousin Superman, 20-something Kryptonian Kara Zor-El (Benoist) has been keeping her superpowers secret. However, when disaster strikes she has no choice but to become Supergirl, the heroine of National City. In this season, Kara takes on the World Killer, Reign (Odette Annable). The episodes are: 'Girl of Steel', 'Triggers', 'Far from the Tree', 'The Faithful', 'Damage', 'Midvale', 'Wake Up', 'Crisis On Earth-X: Part 1', 'Reign', 'Legion of Superheroes', 'Fort Rozz', 'For Good', 'Both Sides Now', 'Schott Through the Heart', 'In Search of Lost Time', 'Of Two Minds', 'Trinity', 'Shelter from the Storm', 'The Fanatical', 'Dark Side of the Moon', 'Not Kansas', 'Make It Reign' and 'Battles Lost and Won'.