DCS Kat Frank returns to the Warwickshire Police after a career break covering the terminal illness and death of her husband. She’s ready to return but has promised 18-year-old son Cam that she will take on an executive level post away from the front-line dangers of the job.
The Chief Constable has just the role for her - a pilot scheme to assess the efficacy of using AI to assist officers in the field, initially looking at some cold missing persons cases. More specifically she will have on the team a prototype artificially intelligent detecting entity - AIDE Lock. It resides in a bulky bracelet round her wrist but, unnervingly, can emerge like a genie from a bottle to take the form of a humanoid hologram and join in conversations and interrogations. Kat completes her team with a male DI – Rayan Hassan – and a female DS – Debbie Browne.
Which case to prioritise? The question immediately pitches AIDE Lock’s objective algorithmic analysis against the colleagues’ subjective, experience-based, gut-feeling approach. It is a tension that lasts throughout.
The priority cases (they compromise on two) are subjected to review. Re-examining evidence and re-interviewing witnesses open new lines of investigation. Supercharged by AIDE Lock’s prodigious analytic capacity, progress is made rapidly. So rapidly that the cold cases soon become red hot, and Kat’s promise to stay clear of personal risk soon goes by the board.
As ever, personal
lives are dipped into, prejudices are aired, mistakes are made and learned
from, making for as good a detective novel as any. It is well written, and the
AI twist is modern and timely. But not totally innovative, echoing (probably
unconsciously) Isaac Asimov’s 1950s detective novels partnering a human and
robot – Caves of Steel and The Naked Sun. Not bad company rub shoulders with.