Netflix is staging a Game of Thrones reunion. Alfie Allen has joined the cast of 3 Body Problem, reuniting TV’s erstwhile Theon Greyjoy with Thrones creators David Benioff and D.B. Weiss. Character details are being kept under wraps.

A new cast member has joined 3 Body Problem Season 2, expanding the ensemble of Netflix’s sci-fi series. Known for a prominent role in Game of Thrones, the actor reunites with creators David Benioff and D.

As announced by Netflix today, Game of Thrones alum Alfie Allen has joined the cast of 3 Body Problem season 2 in a mystery role. That’s great news for fans of George R.R. Martin’s world, of course, as now the sophomore installment is basically just a big Thrones reunion—again.