The Meereenese Mask from the HBO American fantasy drama television series Game of Thrones is displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

A model of the White Walker, character from the HBO American fantasy drama television series Game of Thrones is displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitor takes pictures of a model of the White Walker, character from the HBO American fantasy drama television series Game of Thrones at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Women walks past an advertising poster to promote the HBO American fantasy drama television series Game of Thrones outside the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Man walks past an advertising poster to promote the HBO American fantasy drama television series Game of Thrones outside the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Woman walks past an advertising poster to promote the HBO American fantasy drama television series Game of Thrones outside the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

A model of Rhaegal, one of the dragons from the HBO American fantasy drama television series Game of Thrones is displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitors stand in front of a plate armour of Gregor Clegane, character from the HBO American fantasy drama television series Game of Thrones at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitors stand in front of a poster with characters from the HBO American fantasy drama television series Game of Thrones at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitor poses with a sword from the HBO American fantasy drama television series Game of Thrones at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitor looks at different outfits from the HBO American fantasy drama television series Game of Thrones at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitor takes pictures of a model of Rhaegal, one of the dragons from the HBO American fantasy drama television series Game of Thrones at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Different outfits from the HBO American fantasy drama television series Game of Thrones are displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Different outfits from the HBO American fantasy drama television series Game of Thrones are displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

The dress of Ellaria Sand, character from the HBO American fantasy drama television series Game of Thrones is displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

A model of the White Walker, character from the HBO American fantasy drama television series Game of Thrones is displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Women walk past an advertising poster to promote the HBO American fantasy drama television series Game of Thrones outside the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Visitors stand in front of a model of Rhaegal, one of the dragons from the HBO American fantasy drama television series Game of Thrones is displayed at the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVE

TOPSHOTS Women walk past an advertising poster to promote the HBO American fantasy drama television series Game of Thrones outside the International Game of Thrones exhibition in Stockholm on March 11, 2015. According to the television network HBO the fifth season of the fantasy drama television series Game of Thrones will start on April 12, 2015. AFP PHOTO/JONATHAN NACKSTRAND +++ RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION