Over the past twenty years or so, there has been a seismic shift in Indian political, religious, and social life. A country which drew inspiration from the inclusive Hinduism of Mahatma Gandhi, the anti-caste worldview of B.R. Ambedkar, and the agnostic secularism of Jawaharlal Nehru is now driven by Hindutva. This newly dominant version of Hinduism – which blends militant nationalism, anti-minorityism, and global Islamophobia – requires the kind of analysis that only the sharpest scholarly historian can provide. Tanika Sarkar has, over the past two decades, trudged a fieldwork-oriented path through the alleys and byways of Hindutva.