Black Dog Murder Mystery

Im Kartar Singh, Sub Inspector in Mumbai Police. I think my life is unambitious because I havent done anything which can be acknowledged. I have only one reason to smile in the world, my sister - Avneet. I had resigned from the Police force. On the other end, Avneet has found the main suspect in a mysterious murder case with uncountable and folded twists. Here I present, most thrilling days of my life.