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Since the migrant crisis came into the Western consciousness in 2015, there has been significant reporting on how conflict, climate change, and underdevelopment have all contributed to the largest movement of people since World War II — an estimated 21 million refugees globally, according to the UNHCR, and that's not counting people who are internally displaced.
But a new book out this month looks at the migrant crisis from the opposite angle: From the perspective of smugglers who are creating vast networks to move those millions of people, and the billions that they gain in profits.
Peter Tinti is the author of "Migrant, Refugee, Smuggler, Savior," and he says that these networks range from a simple boat crossings, to luxury international travel, and are changing economies and global security structures in the process.
Check out some photos from Tinti's reporting below.