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The Kat and Lock Series by Jo Callaghan presents an enthralling journey through the complex world of police investigation, led by the tenacious DCS Kat Frank and AIDE Lock, the world's first AI detective. This gripping collection brings together In the Blink of an Eye and Leave No Trace, exploring what it means to be human and the relentless pursuit of truth.
In this series, readers follow Kat Frank and Lock, a partnership in which one detective relies on instinct and the other on logic. In the Blink of an Eye is Callaghan's debut, a story that asks what we think it means to be human. In Leave No Trace, the pair face their first live case when a man is found crucified at the top of Mount Judd, and the discovery of a second victim suggests the killer is only just getting started. The narrative is rich with tension, as Kat and Lock race against time to connect the victims and prevent another death.
This collection is a must-read for fans of crime fiction and psychological thrillers. With its compelling writing style and multi-dimensional characters, the Kat and Lock Series is poised to leave a lasting impression on its readers.
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Free 30-day returns on UK orders. If a book arrives damaged, faulty or not as described, we'll refund or replace it free of charge — you usually won't need to send it back. Changed your mind? Contact us within 30 days of delivery. International orders also have 30 days: damaged or faulty books are refunded or replaced free; if you change your mind, the return postage is yours. Read our refund policy.
In-stock orders are dispatched within 1 working day (Monday–Friday), and UK delivery usually takes 2–4 working days after dispatch. For Express International delivery to 21 more countries, see our Shipping Policy.
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Standard UK delivery is £2.99, and free on orders over £35. We also offer Express International delivery to 21 more countries — see our Shipping Policy for rates.
Yes. All of our books are brand new and unread, from publishers and UK book wholesalers.