Dark Invasion

Dark Invasion: 1915: Germany's secret war and the hunt for the first terrorist cell in America is a non-fiction book written by American author, Howard Blum, published by Crown Publishing Group on February 11, 2014. The American edition was issued by Harper in 2014.

Plot
Set in 1915, during World War I, when Germany plotted to sabotage American aid to Europe.

Film adaptation
On January 14, 2013, Warner Bros. acquired the film rights to the book, and set Bradley Cooper to star and produce through his 22 & Indiana Pictures, along with John Lesher through his Le Grisbi Productions, and Adam Kassan.