The Day Before the War recounts the events of August 31, 1939 along the German-Polish frontier and the history preceding these false flag attacks that led to the second European continental war in the 20th century. The book looks back to the aftermath of the First World War and the Treaty of Versailles that redrew the map of Europe, laying the foundations for the rise of fascism and future worldwide conflict. Many of the events and political behaviors demonstrated in the 1930s, particularly in Germany, can be found developing in today's world.

At the center of the story is the poorly orchestrated attack on the radio transmitter in Gliwice - Sender Gleiwitz and this book reveals new information and details.