As HBO's hit series Game of Thrones was winding down a few years ago, the premium cable network put several spin-off shows into development, with only one moving forward to series.House of the Dragon, based on George R.R.
Martin's companion book about the three-centuries reign of House Targaryen, will debut on HBO in 2022.A new book entitledTinderbox: HBO's Ruthless Pursuit of New Frontiers by James Andrew Miller, revealed that the first spin-off, rumored to be entitled The Long Night, from writer Jane Goldman with stars Naomi Watts and Miranda Richardson, cost a whopping $30 million for just the pilot, before they decided not to move ahead.
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