Can You Tell Who's A Double Agent Under The Dome?

Alexander Koch as Junior Rennie and Mike Vogel as Dale

Alexander Koch as Junior Rennie and Mike Vogel as Dale "Barbie" Barbara.

On Under The Dome's “Legacy”, The Resistance joins forces with an unexpected ally: Hektor Martin (Eriq La Salle), 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.
Alexander Koch as Junior Rennie.

Alexander Koch as Junior Rennie.

"Legacy" (Season 3, Episode 10)
Colin Ford as Joe McAlister.

Colin Ford as Joe McAlister.

"Legacy" (Season 3, Episode 10)
Colin Ford as Joe McAlister.

Colin Ford as Joe McAlister.

"Legacy" (Season 3, Episode 10)
Dean Norris as James

Dean Norris as James "Big Jim" Rennie.

"Legacy" (Season 3, Episode 10)
Eriq La Salle as Hektor Martin and Dean Norris as James

Eriq La Salle as Hektor Martin and Dean Norris as James "Big Jim" Rennie.

"Legacy" (Season 3, Episode 10)
Dean Norris as James

Dean Norris as James "Big Jim" Rennie.

"Legacy" (Season 3, Episode 10)
Eriq La Salle as Hektor Martin, Mackenzie Lintz as Norrie Calvert-Hill, and Dean Norris as James

Eriq La Salle as Hektor Martin, Mackenzie Lintz as Norrie Calvert-Hill, and Dean Norris as James "Big Jim" Rennie .

"Legacy" (Season 3, Episode 10)
Mackenzie Lintz as Norrie Calvert-Hill, Dean Norris as James

Mackenzie Lintz as Norrie Calvert-Hill, Dean Norris as James "Big Jim" Rennie, and Max Ehrich as Hunter May.

"Legacy" (Season 3, Episode 10)