As an investigative journalist, Jamie Bartlett has a knack for spotting inconsistencies and strange behaviors. His published books include “The Dark Net” (2014) that details niche internet subcultures and online crime, “Radicals Chasing Utopia” (2017) about the motivations and growth of fringe political groups, and “The People Vs Tech” (2018), which won the 2019 Transmission Prize.

But when Bartlett began pursuing the mysterious disappearance of OneCoin founder Dr. Ruja Ignatova in November 2018, his next endeavor proved to require an even higher level of scrutiny as he began unraveling the truth behind a billion-dollar scam whose mastermind seemingly vanished into thin air.