By Lindsey Bahr
Updated September 26, 2014 at 08:34 PM EDT
Credit: Jerod Harris/Getty Images
  • Movie

Littlefinger is gearing up to terrorize some Gladers.

Aidan Gillen, the Irish actor best known for his role as Lord Baelish, or Littlefinger, on HBO’s Game of Thrones, has signed on to play the villain in Maze Runner: Scorch Trials, based on the second installment in James Dashner’s YA trilogy, according to The Hollywood Reporter. Fox has already dated the pic for a Sept. 18, 2015 release.

To say too much about where, exactly, Scorch Trials picks up would be to spoil the end of the first film, which was just released last weekend and has already grossed $81.5 million worldwide. For those who’ve already read the sequel, Gillen will play Assistant Director Janson, or, as Minho likes to call him, “Rat-Man.”

Maze Runner: Scorch Trials is scheduled to being shooting in October with director Wes Ball, who tweeted that Gillen was his first choice, and star Dylan O’Brien set to return.

Gillen’s reps did not immediately respond to EW’s request for comment.

The Maze Runner

  • Movie
  • PG-13
  • 114 minutes
  • Wes Ball