The word passed into the English language, a four-letter cosh of a word that the hoodlums of East London adopted thinking it was exotic. ‘Thug’ from the North Indian ‘thugee’ or deceiver. The deceivers were men armed with scarves who strangled their victims, supposedly in honour of goddess Kali. Their centuries-old existence was rooted out by William Sleeman in a relentless hunt across central India, which is where Siddhartha Sarma’s book begins.