Amazon may be in the midst of turnover, but those Romanoffs are really filling out. Mad Men boss Matthew Weiner’s global anthology cast expands even further, adding Paul Reiser and Girls alum Corey Stoll and Andrew Rannells to the already-Mad cast.

Per Variety, newest among the expensive series’ additions include The Strain alum Stoll and his Girls partner Rannells, along with Mike Doyle, J.J. Feild, Salem alum Janet Montgomery and soon-to-be Stranger Things star Paul Reiser. Other cast so far includes Christina Hendricks, John Slattery, Oscar-nominee Isabelle Huppert, Boardwalk Empire alum Jack Huston, Amanda Peet and Marthe Keller,

The 2018 series follows “people who believe themselves to be descendants of the Romanov [family, the last imperial dynasty to rule Russia].” Each episode will feature a different cast, a different story and a different location for those claiming familial ties to the son and daughter that apparently escaped the 1918 massacre of the czar and his family.

The Romanoffs also boasts a wealth of producers, writers, costume designers and more from Mad Men history, including writer/executive producer Semi Chellas, Blake McCormick, Andre Jacquemetton, Maria Jacquemetton, director of photography Chris Manley, production designers Henry Dunn and Christopher Brown, hair and makeup’s Theraesa Rivers and Lana Horochowski, Emmy-winning casting directors Carrie Audino, Laura Schiff and Kendra Clark, and revered costume designer Janie Bryant.

Amazon announced the series before its current quest to find a more quadrant-friendly hit, but will The Romanoffs nonetheless be a big ticket? Stay tuned for more as the series gears up for production.

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