Hidden (Badge and the Pen #3) by Roger A. Price.
The Blurb
Vinnie’s romantic holiday did not go as planned. There was an assault, his companion was threatened and the police asked them to leave. And when Vinnie returns to his police job in Manchester, things don’t get much better, as he finds himself at the heart of an investigation that stretches from Manchester to all corners of Europe. Women are being trafficked into the UK and forced into prostitution, and while the police are diligent in their enquiries, they seem to have a rogue in their midst. As events unravel, the lines between good and bad, police and criminals, seem to become more and more blurred... and the stakes for all involved are getting higher. Hidden is Book 3 in Roger Price’s the badge and the pen series, but it can equally be read as a novel in its own right. Existing fans of Vinnie and Christine are bound to love it, but Hidden is also perfect for crime and police fiction lovers, and anybody who loves a fast-paced, gripping story.
About Roger A. Price

The author is a retired detective inspector who had been in charge of a covert unit, which received national acclaim for its successes in engaging those who openly sold Class A drugs.Prior to this, he’d been in charge of the C.I.D. at Preston, having first led a dedicated informant unit.He also worked on murders, drugs squads, and the regional and national crime squads, often in covert roles across the UK, Europe, and the Far East, receiving several commendations.A member of the Crime Writers' Association he now writes crime thrillers in novel and script and uses his previous professional experiences to add gritty realism. Represented by SMA Talent.
My Review
Roger A. Price knows how to deliver a gripping thriller and book three in The Badge and the Pen series, Hidden is no exception to this electrifying series. This story illustrates the sheer horror of people trafficking and modern slavery, and what those poor girls are subjected to, and the monsters that exploit them. DI Vinnie Palmer and his journalist sidekick Christine Jones are turning out to be superheroes dicing with death (yet again) in pursuit of individuals who have no trace of humanity in their DNA. They're a good match professionally and it seems they are made for each other romantically too. Can't wait for Book Four in the series. I want more of this.