Garth Nix was born in 1963 in Melbourne, Australia. A full-time writer since 2001, he previously worked as a literary agent, marketing consultant, book editor, book publicist, book sales representative, bookseller, and as a part-time soldier in the Australian Army Reserve.

Garth's books include the award-winning young adult fantasy novels Sabriel, Lirael, Abhorsen and Clariel; the dystopian novel Shade's Children; the space opera A Confusion of Princes; and a Regency romance with magic, Newt's Emerald. His fantasy novels for children include The Ragwitch; the six books of the Seventh Tower sequence; the Keys to the Kingdom series; and the Troubletwisters series and Spirit Animals: Blood Ties (co-written with Sean Williams).

More than five million copies of his books have been sold around the world, his books have appeared on the bestseller lists of the New York Times, Publishers Weekly, the Times and The Australian, and his work has been translated into forty-one languages. He lives in a Sydney beach suburb with his wife and two children.

Justina Robson is an Arthur C. Clarke shortlisted author of ten SFF novels, including the highly regarded Quantum Gravity series, and was one of the first writers to win amazon.co.uk's Writer's Bursary in 2000.

Based in Leeds, she's been shortlisted for multiple international awards and is a sought-after creative writing teacher who has taught at the Arvon Foundation. A graduate of the Clarion West workshops in Seattle (1996) she has been invited to teach there also, though she hasn't made it yet for various practical reasons.

She acted as a judge for the Arthur C Clarke awards on behalf of the Science Fiction Foundation in 2006. Her most recently published novel is Glorious Angels, shortlisted for the British Science Fiction Association Best Novel 2015.

Frances Hardinge spent her childhood in a huge old house that inspired her to write strange stories from an early age. She read English at Oxford University, then got a job at a software company. However, by this time a persistent friend had finally managed to bully Frances into sending a few chapters of Fly By Night, her first children's novel, to a publisher. Macmillan made her an immediate offer. The book went on to publish to huge critical acclaim and win the Branford Boase First Novel Award. Known for her beautiful use of language, she has since written many critically acclaimed novels, including A Skinful of Shadows, Verdigris Deep, Cuckoo Song, and the Costa Award-winning The Lie Tree.

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.

Jonathan Strahan has co-edited The Year's Best Australian Science Fiction and Fantasy series of anthologies for HarperCollins Australia, co-edits the Science Fiction: The Best of...and Fantasy: The Best of...anthology series with Karen Haber for Simon & Schuster/ibooks, edits the Best Short Novels anthology series for the Doubleday Science Fiction Book Club, and co-edited The Locus Awards for Eos with Charles N. Brown. He is also the Reviews Editor for Locus: The Magazine of the Science Fiction and Fantasy Fields, and reviews for the magazine regularly. He is currently working on The New Space Opera II.