As TNT continues to put together its Snowpiercer series, the show has moved to bring in another two new cast members.

The network has now revealed that Oculus and Ouija: Origin of Evil’s Annalise Basso and The Interesting’s Sasha Frolova have joined the project as series regulars, joining the previously-announced Daveed Diggs and Jennifer Connelly.

Basso’s role is that of LJ Anderson, described as “A quiet, diligent, Midwestern girl who lives with her parents in a fourth-class cabin and works in the greenhouse car. Poor but not as desperate as those that live in the tail of the train, LJ has made peace with her daily routine until a major event shakes up her world.” As for Frolova, her role is that of Pixi Aariak, labelled as “Strange, mysterious, and inscrutable, a charismatic chameleon and probably inspired the expression ‘still waters run deep.’ She returns to the front of the train after a three-year sentence in the prison car and struggles to acclimate to her old life. You can’t take your eyes off of her. And you probably shouldn’t.”

Snowpiercer began life as a Jacques Lob and Jeam-Marc Rochette graphic novel before being turned in to a 2013 movie starring Chris Evans, Tilda Swinton, Jamie Bell, Song Kang-ho, John Hurt, Ed Harris, and Octavia Spencer. The futuristic tale is set seven years after the world has been turned in to a frozen wasteland, with the remaining survivors of humanity taking refuge on a perpetually moving train that circles this icy landscape. Of course, with a mixed bag of various survivors, it’s not long before familiar social themes such as class divides, social prejudice and politics come to the fore.

Where TNT’s small screen version is concerned, Sinister and Doctor Strange’s Scott Derrickson is on board to direct and executive produce the series, while Terminator: The Sarah Connor Chronicles’s Josh Friedman is acting as writer and showrunner.