'Boyd is English fiction's master storyteller ... Restless is that rare thing: a spy thriller from a first-rate narrative intelligence'

Independent on Sunday

'Fast moving, densely plotted, beautifully observed and probably one of the best things Boyd has done'

Esquire

'A good, rollicking read ... pulls you deep in to the obscure, forgotten intricacies of wartime espionage ... will keep you turning pages until the end'

Observer

'Heart-stoppingly exciting ... a riveting tale of wartime derring-do'

Time Out