The series — one of TheWrap's best bets to become a series next season — follows a young girl with emerging powers and a man sprung from prison to protect her.
MacLachlan will play Skouras, a mysterious billionaire with an even more mysterious agenda. He joins a cast that includes Johnny Sequoyah, Jake McLaughlin, Delroy Lindo, Sienna Guillory and Jamie Chung.
MacLachlan's latest roles have included turns on CBS' "The Good Wife" and quickly canceled "Made in Jersey."
Though the short-lived "Twin Peaks" has been gone from the air for two decades, it influenced a wide range of shows, from Abrams and Burks' "Lost" on ABC to the upcoming "Wayward Pines," a Fox limited series from M. Night Shyamalan.