'Game of Thrones' Books Michiel Huisman, But What Characters Will Be Joining Season 4?

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Another Game of Thrones role cast and not another character learned. Michiel Huisman joins Joseph Gatt and Mark Gatiss in having an unknown role on the HBO show. You could always read the books to find out who will be on next season. Or you could take the shortcut and click through this slideshow... but be warned, spoilers lie ahead.

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