HBO has brought online two new videos previewing the third season of "Game of Thrones," premiering on March 31st. The first is "Invitation To The Set" and the second a preview of what's to come on HBO this winter.

Based on the novels of George R.R. Martin, the third season is said to adapt events from "A Storm of Swords" and will include quite a few new and returning characters.

The cast of season two included Emmy and Golden Globe winner Peter Dinklage, Michelle Fairley, Lena Headey, Emilia Clarke, Nikolaj Coster-Waldau, Aidan Gillen, Iain Glen, Kit Harington, Richard Madden, Maisie Williams, Isaac Hempstead Wright, Sophie Turner, Jack Gleeson and Alfie Allen.