Chief Inspector Aden Vanner hunts down a cold-blooded assassin in London's drug underworld in this page-turning thriller from the author of Sorted.   Drug Squad Chief Inspector Vanner is investigating a group of crack dealers in Harlesden, London's Caribbean district, when a bizarre murder captures his attention. Jessica Turner, a seemingly unremarkable suburban woman, was gunned down in her home with a TT-33 Tokarev--a make of gun now obsolete in its native Russia, but still common among terrorists in the Irish Republican Army. Unless it's a case of mistaken identity, Jessica Turner clearly had a secret.   As Vanner digs deeper into the case, he begins to make connections between Jessica's murder and the Harlesden gang, between her cagey husband and the IRA, and between himself and a vengeful old acquaintance. When all the pieces collide, even a seasoned pro like Vanner isn't prepared for the explosion.   Close Quarters is the final book in Jeff Gulvin's gritty and authentic police-procedural trilogy set in the dark streets of London, which includes Sleep No More and Sorted.   "Gulvin keeps your nose glued to the page." --The Literary Review