A selection of photographs taken during the research for the book…

The opening scene is set beneath the Basilica of Notre-Dame de la Garde, Marseille
The opening scene is set beneath the Basilica of Notre-Dame de la Garde, Marseille

The Old Port, Marseille (a view to die for?)
The Old Port, Marseille (a view to die for?)

Paris can be an equally dangerous place
Paris can be an equally dangerous place

The safe house in Montmartre is somewhere in this photograph
The safe house in Montmartre is somewhere in this photograph

Cambridge, England (where danger is redefined)
Cambridge, England (where danger is redefined)

An important Cambridge location (where the details matter)
An important Cambridge location (where the details matter)

London, England (the most dangerous place of all?)
London (the most dangerous place of all?)