The book "What Was the Plan of the Oil Treason? Traditional History Tested by Original Evidence" is a study of a famous historical event that took place in England in 1605. Authors Gerard and John question the historical facts surrounding the so-called "Oil Betrayal Plan" using original sources and evidence. The book reveals new perspectives on this event and helps readers better understand the time and circumstances that motivated the assassins to their actions. Delving into the pages of this book, readers can view history from a different perspective and evaluate arguments that refute the traditional version of events.