Secret hours. Mick Herron. 2023.

When your cover is blown.. Where do you hide? 

Two years ago, the Monochrome inquiry was set up to investigate the British secret service. Monochrome's mission was to ferret out misconduct, allowing the civil servants seconded to the inquiry, Griselda Fleet and Malcolm Kyle, unfettered access to confidential information in the service archives.

But with progress blocked at every turn, Monochrome is circling the drain... Until the OTIS file appears out of nowhere.

What classified secrets does OTIS hold that see a long-redundant spy being chased through Devon's green lanes in the dark? What happened in a newly reunified Berlin that someone is desperate to keep under wraps? And who will win the battle for the soul of the secret service - or was that decided a long time ago?