'Merriman excels at recreating the physicality of their experiences: the smell of dense clay, the click-clack of a woman walking down the street above in high heels... Merriman has burrowed her way deep into interviews, news reports and Stasi files to fashion an impressive real life page-turner.' Guardian
'An audacious and compelling tale, told with narrative tension and novelistic drive, creating a fascinating portrayal of life in Berlin in the early days of the Wall.' Observer
'A fantastic story, exceedingly well told...more gripping than a thriller. The story arc, through betrayal and disaster to triumph, is perfect...a cracking tale that deserves retelling.' The Times
'its skilful blend of a dynamic protagonist, intrigue, spooks, deception, and a love divided imbues Tunnel 29 with all the qualities of a taut Cold War spy thriller.' Sunday Business Post
'Captivating... Ms Merriman's well-crafted book does justice to the extraordinary bravery of her characters.' Economist
'This new book... allows readers to slip into Joachim's shoes as if living this extraordinary experience... This is a remarkable tale, beautifully told and utterly compelling.' BBC History Magazine