Between 1940 and 1945, Britain's Special Operations Executive (SOE) carried out sabotage and organised resistance across occupied Europe. Over 5 years, SOE sent over 500 agents into Norway to carry out a range of operations from sabotage and assassination to attempts to organise an underground guerrilla army. This book is the first multi-archival, international academic analysis of SOE's policy and operations in Norway and the influences that shaped them, challenging previous interpretations of the relationship between this organisation and both the Norwegian authorities and the Milorg resistance movement.