Under the Dome Wiki
Season 3, Episode 10
Air Date August 20, 2015
Written By Alexandra McNally & Andres Fischer-Centeno
Directed By Dennie Gordon
U.S. Viewers 4.04 Million
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Legacy is the tenth episode of Season 3 of CBS' Under the Dome, which aired on August 20, 2015. It is the thirty-sixth episode overall.


The Resistance, the citizens not under Christine's control, join forces with an unexpected ally: Hektor Martin, the nefarious head of Aktaion. Despite Hektor revealing more about the Dome's origins and helping to strike back at it, Big Jim and Julia still worry he will betray them. Meanwhile, Hunter receives encrypted files that give disturbing insights into the final effect the Dome will have on the infected townspeople.



Main Cast

Supporting Cast

Guest Stars





  • First appearance of Patrick Walters.
  • First appearance of Dava Bloom.
  • First appearance of Beau Griffith.
  • Last appearance of Charlotte Chastain.
  • Last appearance of Harriet Arnold.
  • The title refers to Barbie's and Eva child.
  • It's revealed that Aktaion destroyed the Red Door after they came through it.
  • Beau Griffith mentions Charlie Angels a crime drama TV series when teaching Norrie how to handle a gun.
Episodes of Under the Dome
Season 1 "Pilot" • "The Fire" • "Manhunt" • "Outbreak" • "Blue on Blue" • "The Endless Thirst" • "Imperfect Circles" • "Thicker Than Water" • "The Fourth Hand" • "Let the Games Begin" • "Speak of the Devil" • "Exigent Circumstances" • "Curtains"
Season 2 "Heads Will Roll" • "Infestation" • "Force Majeure" • "Revelation" • "Reconciliation" • "In the Dark" • "Going Home" • "Awakening" • "The Red Door" • "The Fall" • "Black Ice" • "Turn" • "Go Now"
Season 3 "Move On" • "But I'm Not" • "Redux" • "The Kinship" • "Alaska" • "Caged" • "Ejecta" • "Breaking Point" • "Plan B" • "Legacy" • "Love is a Battlefield" • "Incandescence" • "The Enemy Within"