The underground Congress Radio played a small but significant part in India's struggle for independence, and Usha Mehta was at its centre. Sadly the story of her involvement, activities, arrest, trial and conviction has so far not been told.This finely structured and affectionately written book, based on probing questions, detailed knowledge of Mumbai and deep understanding of Usha Mehta more than fills the gap. Having myself known Ushaben closely for over forty years, I can say with confidence that the book presents an image of her that is as true to reality as any image can be.This book on the Congress Radio of 1942 is a thrilling and moving account of how a daring underground operation was conceived and carried out, and of how it was busted by the colonial police. It is meticulously researched, drawing on a wide range of primary sources. At the centre of the story is the remarkable figure of Usha Mehta, a slight, slender, twenty-two-year-old freedom fighter of exemplary courage and resolution. The book deserves a wide readership, within and beyond the academy.