United Kingdom, Sept. 10 -- Kit Harington and Keira Knightley have been cast in the new Harry Potter audiobook series.

The Game of Thrones actor and Black Doves actress are among the 10 new stars lending their voices to the Harry Potter: The Full-Cast Audio Editions.

Kit will voice Professor Lockhart with Keira taking on the role of Professor Umbridge in the upcoming Pottermore Publishing and Audible project.

Game of Thrones' Iwan Rheon and Gemma Whelan will voice Professor Lupin and Professor Sprout respectively, with Ruth Wilson joining as Bellatrix Lestrange, Ambika Mod playing Nymphadora Tonks, and Leo Woodall as Bill Weasley.

James McAvoy has also joined as Mad-Eye Moody, while Matt Berry will voice Sir Cadogan.

For the new audi...