Casey King is the crime writing alter-ego of ex-crime fighter, Marie O’Halloran. She has
spent over two decades as a member of An Garda Síochána and has a Diploma in Policing
Studies. Throughout her career, she has worked on various gangland operations, drugs
investigations as well as having roles of forensic exhibits officer, and community liaison
officer.

She consults on novels for best-selling and award-winning writers, with producers and
directors for TV and film, and delivers workshops on various topics for which she is
qualified.

Among Casey’s qualifications are MSc in Mindfulness Based Wellbeing, HDip in
Coaching/Coaching Psychology and has worked as Reader in Residence for Cork County
Council Arts Council in local primary schools, creating and delivering mindfulness and
creativity programmes for children and young adults. She also works with professional and
non-professional performers to prepare in advance of readings and performances.

As a crime writer, Casey King is represented by Nicky Lovick of WGM Atlantic Talent &
Literary Group. She was recently listed in The Bookseller Magazine’s Agent Hotlist for
London Book Fair. She writes police procedurals, gangland crime thrillers, psychological
thrillers and crime comedies. Her female-led gritty gangland thrillers are published by Joffe
Books London.