'Welcome to the hunt, Anya Taylor-Joy.' Check out The Lord of the Rings: The Hunt for Gollum casting announcement video as Anya Taylor-Joy will play Seren in the upcoming fantasy film. The Lord of the Rings: The Hunt for Gollum also stars Ian McKellen as Gandalf, Elijah Wood as Frodo, Lee Pace as Thranduil, Jamie Dornan as Aragorn, and Andy Serkis as Gollum. The Lord of the Rings: The Hunt for Gollum opens in theaters on December 17, 2027.