'Game of Thrones': 20 questions as Season 3 ends

As Season 3 of 'Game of Thrones' draws to an end, many burning questions remain. Here are some of the most urgent. (Beware, if you haven't finished Season 3: spoilers follow!)

5. What about Dragonglass?

Dragonglass is the only thing capable of killing the creepy things beyond the wall. Is no one else concerned that we don't have a large supply of this stuff at the ready? Can we get Daenerys and Bran to team up? 

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