Sixty-One Nails

"It started with a suspected heart attack on the London Underground in the middle of the rush hour. But for ordinary guy Niall Petersen, the mysterious woman who treated him that day was no doctor. Instead, he found himself introduced to the hidden world of the Feyre, an uncanny place of legend that lurks just beyond the surface of everyday life. The Untainted, the darkest of the Seven Courts of the Feyre, have made their play for power. Sharing their heritage, only Niall can recreate the ritual of the Sixty-One Nails - or their dark dominion will enslave all of the Feyre, and all of humankind too."--Publisher description.