S.J.I. (Susi) Holliday is a pharmaceutical statistician by day and a crime and horror fan by night. Her short stories have been published in many places and she was shortlisted for the inaugural CWA Margery Allingham prize with her story ‘Home from Home’, which was published in Ellery Queen Mystery Magazine in spring 2017. She is the bestselling author of the creepy and claustrophobic Banktoun trilogy (Black Wood, Willow Walk and The Damselfly) featuring the much-loved Sergeant Davie Gray, and the festive serial killer thriller The Deaths of December. The Lingering was a number-one bestseller in ebook, and critically acclaimed in the UK press.