Nnedi Okorafor was born in the United States to Nigerian parents of Igbo descent. Her novels include Who Fears Death (winner of the World Fantasy Award for Best Novel), Akata Witch (an Amazon.com Best Book of the Year), Zahrah the Windseeker (winner of the Wole Soyinka Prize for African Literature), and The Shadow Speaker (winner of the CBS Parallax Award).

Her work spans several genres and age ranges, as evidenced by her short story collection Kabu Kabu and science fiction novel Lagoon (finalist for Best Novel in the British Science Fiction Association Awards and the Red Tentacle Awards).

Her latest release, Binti, won both the Hugo Award for Best Novella and the Nebula Award for Best Novella. Nnedi is an associate professor at the University at Buffalo, New York. She splits her time between Buffalo and Chicago with her daughter Anyaugo and family.

Daniel Polansky was born in Baltimore, Maryland.

He can be found in Brooklyn, when he isn't somewhere else.

This is his first totally contemporary fantasy novel.

Angela Slatter is the award-winning author of eight short story collections, including A Feast of Sorrows: Stories, Sourdough and Other Stories, The Bitterwood Bible and Other Recountings, and Winter Children and Other Chilling Tales.

She has won the World Fantasy Award, the British Fantasy Award and five Aurealis Awards. Her short stories have appeared widely, including in annual British, Australian and North American Best Of anthologies, and her work has been translated into Spanish, Russian, Polish, Romanian, and Japanese.

Vigil was her first solo novel, and the sequel Corpselight is due out in July 2017. Angela lives in Brisbane, Australia.

Paul Cornell has written some of Doctor Who's best-loved episodes for the BBC, as well as the novel Doctor Who- Nemesis of the Daleks with Dan Abnett.

He has also written on a number of comic book series for Marvel and DC, including X-men and Batman and Robin.

He has been Hugo Award-nominated for his work in TV, comics and prose, and won the BSFA award for his short fiction.

K. J. Parker is a pseudonym for Tom Holt. He was born in London in 1961. At Oxford he studied bar billiards, ancient Greek agriculture and the care and feeding of small, temperamental Japanese motorcycle engines.

These interests led him, perhaps inevitably, to qualify as a solicitor and emigrate to Somerset, where he specialised in death and taxes for seven years before going straight in 1995. He lives in Chard, Somerset, with his wife and daughter.