Get the first three books in the addictive, award-winning, number-one bestselling Roy & Castells series, in one GREAT-VALUE Box Set! Emily Roy, a profiler on loan to Scotland Yard from the Canadian Royal Mounted Police, joins French true-crime writer Alexis Castells on the hunt for serial killers, in cases that take them from London to Sweden and back to the past ... to some of the most horrific periods of modern history. 'A bold and intelligent read' Guardian 'A satisfying, full-fat mystery' The Times 'Assured telling of a complex story' Sunday Times Block 46 (Book One) The hunt for a serial killer takes criminal profiler Emily Roys and true-crime writer Alexis Castells from London to Sweden, and back to the past, to Buchenwald Concentration Camp, as a terrifying connection comes to light. The first instalment the disturbing, chilling Roy & Castells series, by the Queen of French Noir. Keeper (Book Two) An abduction in London and the discovery of a body on the west coast of Sweden lead criminal profiler Emily Roys and true-crime writer Alexis Castells back to Jack the Ripper's Whitechapel, as they hunt a serial killer. Book two in the explosive, award-winning Roy & Castells series. Blood Song (Book Three) The action swings from London to Sweden, and then back into the past, to the atrocities of Franco's Spain, as Roy & Castells hunt a monstrous killer ... in the third instalment of 'Queen of French Noir' Johana Gustawsson's award-winning, international bestselling Roy & Castells series. Praise for the Roy & Castells series ***Longlisted for the CWA International Dagger*** ***Winner of Balai de la Découverte and Nouvelle Plume d'Argent Awards*** ***International Number One Bestseller*** 'Dark, oppressive and bloody but also thought-provoking, compelling and very moving' Metro 'A must-read' Daily Express 'A truly European thriller' Financial Times 'A real page-turner, I loved it' Martina Cole 'Cleverly plotted, simply excellent' Ragnar Jónasson 'Bold and audacious' R. J. Ellory 'Gustawsson's writing is so vivid, it's electrifying. Utterly compelling' Peter James 'Gritty, bone-chilling, and harrowing – it's not for the faint of heart, and not to be missed' Crime by the Book 'A relentless heart-stopping masterpiece, filled with nightmarish situations that will keep you awake long into the dark nights of winter' New York Journal of Books