The second part of Vietnamese Memories: Leaving Saigon, "Linh Tho," is based on a true story inspired by Pierre Daum’s 4-year investigation, published as a non-fiction novel under the name Immigrés de Force (The Forced Immigrants, Éditions Actes Sud, 2009), which chronicled the fate of 20,000 Indochinese workers displaced during World War II. His book triggered a major call to action, encouraging many French cities to restore and honor the memory of those long-forgotten immigrants.

Pierre Daum is currently focused on deep investigative journalism.