After Martin's editor created waves by suggesting that his 'A Song of Ice and Fire' series could stretch from seven books to eight, Martin himself spoke out.
George R.R. Martin's editor recently said that she 'begin[s] to wonder]' if Martin's story can be wrapped up in seven books.
'Game of Thrones' returned for a fourth season on April 6.
'Thrones' showrunners D.B. Weiss and David Benioff recently said they're planning on seven seasons for the HBO fantasy drama.