While the First World War rages on in Europe, a German terrorist cell is waging its own secret war on American soil. And when a New York City cop uncovers the plot, he must fight to save his country before it’s too late.

Episode Length: 00:48:00

Year: 2015

Episode: 8

This documentary is available to watch for FREE on Planet Knowledge, a free to watch video on demand channel on Freeview HD (Channel 265), Youview, Samsung connected TV’s, selected smart tv’s, tablets and smartphones using Android or iOS.