Blue is a song inspired by a letter written to a teenage girl that David Zach met while working with The Exodus Road in Asia in 2020.  

"As part of a debriefing process, operatives will often write letters to the boys and girls, men and women they meet while undercover. In these therapeutic letters, which stay tucked away in journals, they have a chance to say what they really want to say, but can't because of their roles as investigators. 

This is the story of one of those letters. 

It's the story of a 15-year-old girl named Blue. 

And it's the story of both the heart and the haunting that our operatives carry with every mission."