In a Cambodian compound with rooms designed to look like Singaporean and Australian police offices, papers were strewn across desks and floors: the ‌detritus of a fraud factory abandoned in haste. Among the documents were profiles of a 73-year-old Japanese retiree, complete with his phone number and bank account balance, and an American woman who disclosed that she was a victim ‍of domestic abuse. Nearby were scripts to commit love scams and impersonate police, as well as a room set up to...