Lauren Kate posted the full list with pictures of the cast.
It’s Official: The Fallen Cast
Lola Kirke as Penn
Sianoa Smit-McPhee as Molly
Daisy Head as Arianne
Hermione Corfield as Gabbe
Malachi Kirby as Roland
Chris Ashby as Todd (Is Todd the guy Luce hurt in the beginning of the book before being sent to Sword and Cross? )
Addison Timlin as Lucinda
Jeremy Irvine as Daniel
Harrison Gilbertson as Cam