Global investigations from the BBC. Uncovering gripping stories from around the world and telling them episode by episode. Delve into a World of Secrets. Latest season: Somewhere in America, a twelve year old girl is being abused in her own home - photographs of it are being shared to a vast community of child abusers on the ‘dark web’ — an encrypted corner of the internet where users are untraceable. But, hidden amongst them, are two men whose job it is to try and find her: US Special Agents Greg Squire and Pete Manning. For over seven years, BBC Eye journalist Sam Pi...