Abhishek Banerjee, aka Hathoda Tyagi, is the casting director of this web series.
Anurag Kashyap tweeted that Paatal Lok is "the best crime thriller to come out of this country," adding that "It comes from the understanding of Real India, The dark heart of India, the communal and casteist India"
Socio-economic divisions in India are metaphorically compared with the mythological Indian concepts of Svarga, Dharti and Paatal (heaven, earth and the hell). Delhi is used as the story-telling playground where Lutyens Delhi is heaven, Vasant Vihar and Noida is the earth while Jamna Paar in East Delhi is hell. The climax of the story is also based on the mythological fable of Yudhisthira's dog from the Mahabharata.
Paatal Lok is loosely based on Tarun Tejpal's 2010 novel called "The Story of My Assassins".
Anushka Sharma's debut as a web series producer.