is a pseudonym for Catherine Webb, a Carnegie Medal-nominated author whose first book was written when she was just fourteen years old. She went on to write several other novels in various genres, before publishing her first major work as Claire North,, in 2014. It was a critically acclaimed success, receiving rave reviews and an Audie nomination, and was included in the's Best Books of the Year list. Her next novel,, was also in the's Best Books of the Year, in 2015. Catherine currently works as a theatre lighting designer and is a fan of big cities, urban magic, Thai food and graffiti-spotting. She lives in London. --This text refers to the paperback edition.

"Everybody needs to read 84K. Consistently thoughtful fiction like this needs to be championed. I'll admit it, I'm a little in awe of the author. Her work is sublime.... Claire North deserves your undivided attention. Buy the book, read it. Your brain will thank you.... If there was a rating higher than highly recommended this book would receive it."

"An eerily plausible dystopian masterpiece, as harrowing as it is brilliant"―"An extraordinary novel that stands with the best of dystopian fiction, with dashes of."―"A terrifying setting that feels rooted to the present day.... Imbued with a menace that feels both recognizable and urgent, and the decisions the characters make as a result feel uncomfortably real."―"Another captivating novel from one of the most intriguing and genre-bending novelists currently working in the intersection between thriller and science fiction."―"A furious, confrontational book that's extremely smart... its energy is infectious and its ideas are fiercely provocative."―"Put simply, this book just blew my mind. A remarkable writer, doing extraordinary things, and I think this is her best book yet."―"Claire North goes from strength to strength.... A tense, moving story."―"The grimy,Claire North has created for 84k is our world, just a few years down the path."―"One of the most distinct and compelling SF novels of the year thus far."―--This text refers to the paperback edition.