The Deathly Hallows are three powerful magical objects from the Harry Potter series, specifically introduced in the seventh book, 'Harry Potter and the Deathly Hallows.' These artifacts include the Elder Wand, the Resurrection Stone, and the Invisibility Cloak, each granting unique abilities to their possessor. The legend of the Deathly Hallows is central to the story's climax, as they are sought after by the protagonist, Harry Potter, and his friends. The Hallows symbolize themes of mortality, power, and the choices one makes in life, ultimately leading to a deeper understanding of sacrifice and love.