Catriona was born in Washington, DC and grew up in the United States, Kenya, Madagascar, Yemen, and Morocco. She read English at St Edmund Hall, Oxford and is a graduate of the Creative Writing MA at the University of East Anglia. Her debut Rawblood (W&N, 2015) won Best Horror Novel at the 2016 British Fantasy Awards, was shortlisted for the Authors Club Best First Novel Award and a WHSmith Fresh Talent title.
Her second novel, Little Eve (W&N, 2018) won the Shirley Jackson Award 2018, was a Guardian best book of 2018 and won the August Derleth Award for Best Horror Novel 2019.
Catriona is the only woman to have won the August Derleth Award three times. Her short stories have appeared in numerous anthologies. Catrionas third novel, The Last House on Needless Street, was published to acclaim in March 2021 in the UK by Viper, the crime and thriller imprint at Profile Books/Serpents Tail, and in the US by Tor Nightfire. It has so far sold in over 20 territories, and was Times Book of the Month, Observer Book of the Month, March Editors Pick on Open Book, a Between the Covers BBC2 book club selection, and a Times bestseller. Film rights were optioned by Andy Serkiss production company, The Imaginarium. Viper published Catrionas fourth novel, Sundial, in March 2022, and her fifth, Looking Glass Sound, in April 2023. She lives in London and Devon.
Photo credit © Robert Hollingworth