Masterly ... thoroughly recommended for anyone wishing to learn more about one of the more under-explored areas of the second World War.

Irish Times

A dramatic, humane and hugely knowledgeable account of betrayal, resistance and double lives which brings to life a hidden dimension of the Second World War and reads like a thriller.

Robert Gildea

Long overdue, this is a masterful and cutting-edge analysis of Norway's 1940 invasion, occupation and aftermath, penned by Europe's foremost scholar of Scandinavia.

Peter Caddick-Adams

[A] meticulously documented history of Norway under Nazi occupation

Jewish Chronicle