Sophie Hardcastle was born in 1993. She is an author, artist, screenwriter and scholar.

Her novel, Below Deck has sold in eight territories and will be translated into six languages.

Sophie is also the co-creator, co-writer and co-director of the Australian online series, Cloudy River, which was made with completion funding from Queer Screen, and principal funding from Screen Australia. The show is produced by unko, and distributed by Escapade Media. 

In 2018, Sophie was a Provost's Scholar at Worcester College, at the University of Oxford. She is one of the first two Australians to receive this scholarship.

Previously in Australia, Sophie completed a Bachelor of Visual Arts at Sydney College of the Arts (SCA), majoring in painting, in 2016. She completed Honours in Visual Arts at SCA on an academic scholarship from the University of Sydney in 2017, graduating with First Class Honours and an Academic Merit Award.

Sophie's memoir, Running like China is published by Hachette and was released in September 2015. Her debut novel for young adults, Breathing Under Water is also published by Hachette and was released in July 2016. Bolinda Audio publishes both books as audio books.

In addition to her books, Sophie has written for various publications, including Griffith Review, Anthroposphere, ELLE, Harper’s Bazaar, The Anthroposphere Review, The Stick, Surfing World and Damaged Goods Zine. Her art has appeared in The Mays Anthology, and RISE (Oxford Climate Review).