"Calling Sehmat" is a novel by Harinder Sikka that tells the story of a young Indian woman, Sehmat Khan, who becomes a spy during the 1971 Indo-Pakistani War. Driven by her love for her country and her husband, she risks her life to gather crucial intelligence for the Indian government. The narrative is based on true events and highlights the challenges and dangers faced by Sehmat as she navigates her dual identity. The book explores themes of patriotism, sacrifice, and the complexities of love in times of conflict, making it a compelling read for those interested in espionage and historical fiction.