The Prime Video series also shares a sneak peek of Macaulay Culkin's mystery character ahead of its Dec. 17 premiere

The second season teaser shows off an important character as Justin Theroux joins the cast as Robert House. Taking place in New Vegas, the stars of Fallout Ella Purnell, Walton Goggins and Aaron Moten,

The 'Fallout' Season 2 trailer reveals that Justin Theroux is Robert House, plus there's a deathclaw in New Vegas.

Walton Goggins, Ella Purnell and Aaron Moten are back for the second season. Prime Video has revealed that the first series was one of its top three most-watched titles ever.

Fallout season 2, premiering Dec. 17, brings the action to New Vegas, introduces Justin Theroux's Robert House and gives fans their first look at Deathclaws What happens in New Vegas, stays in New Vegas — hopefully.

Amazon Prime Video has set a December release for 'Fallout' Season 2 and revealed first look photos of New Vegas.