Secrets of The Cold War:

For over fifty years the world's two greatest superpowers, the United States and Soviet Union, pour their resources into a terrifying array of doomsday weapons and military machines. The Cold War is the world's first nuclear armed confrontation. Remarkably, it's also the greatest clandestine war in the history of mankind - conducted in secret beneath the waves. Now, with access to daring expeditions, precision data and classified information, we use ground-breaking computer-generated-images to drain the ocean and reveal the shocking secrets of the nuclear-armed Cold War.

For the first time the Imperial War Museum allows cameras behind the scenes. Revealing the pressures faced and satisfaction felt by experts and volunteers as they work to preserve objects and stories from our wartime past.

'One of the mysteries I've long been fascinated by, and I am so grateful that Ravi Somaiya has cracked it open so brilliantly' David Grann, author of Killers of the Flower Moon