The Thai Jack the Ripper

Thailand's lush beaches and exotic holiday resorts often perfectly hide the depravity that befalls the local poor population of the country. Hidden in the shadows of explicit beauty, lurks an underworld of forced labor and crimes that go unnoticed and unpunished.
For Somkid Pumpuang, this type of environment lent itself blissfully to his monstrous killing spree.
Due to Thailand's vast lands and poverty-stricken provinces, this monster was able to vent his uncontrollable temper and incessant need for money and lust on the poorest of victims.
How many did he kill?