Sibéal has written for publications including The Guardian, fashion trend forecaster WGSN, Vogue.com and The Financial Times, where she was the resident philanthropy columnist for the How To Spend It section for six years. She studied Modern History at St Andrews and Quentin Tarantino film at Yale.

Her bestselling debut Witch Wars has been translated into 10 languages so far and was shortlisted for the Sainsbury’s Children’s Book Award and the Waterstone’s Children’s Book Prize.

Books in order of publication:

Witch Wars – Witch Wars # 1 – 2015

Witch SwitchWitch Wars # 2 – 2015

Witch Watch – Witch Wars # 3 – 2016

Witch GlitchWitch Wars # 4 – 2016

Bad Mermaids Make Waves – Bad Mermaids # 1 – 2017

Witch Snitch: The Inside Scoop on the Witches of Ritzy City – Witch Wars # 5 – 2017

Witch Tricks – Witch Wars # 6 – 2018

Bad Mermaids: On the Rocks – Bad Mermaids # 2 – 2018

WBD Book: Bad Mermaids Meet the Witches – 2019

Bad Mermaids: On Thin Ice – Bad Mermaids # 3 – 2019

Beyond Platform 13 – 2019

Bad Mermaids Meet the Sushi Sisters – Bad Mermaids # 4 – 2020

Tinsel (The Girls Who Invented Christmas) – 2020