One 'Game of Thrones' star is pretty confident he's safe until the very end

Only two things are certain in Game of Thrones: death, and more death. 
But one of the stars seems to be feeling pretty confident about his chances of making it to the end of the series, despite its notoriously high body count.
Samwell Tarly (John Bradley) certainly seemed like an underdog when he was introduced in Season 1 — but author George R. R. Martin has proven that he's a big fan of underdogs; or "cripples, bastards and broken things," as Tyrion Lannister once famously observed