Harinder Sikka is an Indian author and filmmaker known for his contributions to literature and cinema. He gained recognition for his novel, Calling Sehmat, which is based on the true story of an Indian spy during the 1971 Indo-Pakistani War. The book was later adapted into a successful film titled Raazi, further increasing his prominence in the creative industry. In addition to his writing, Sikka has worked in various capacities in the film industry, including as a screenwriter and director. His works often explore themes of patriotism, sacrifice, and the complexities of human relationships, resonating with audiences both in India and abroad.