Gumnaam

After a crash land the pilot Manoj Kumar and the other passengers, Nanda, Helen, Madan Puri, Pran, Satyan Bose find themselves on a marooned island. After waiting for help they find a very deserted haveli but are surprised to meet a servant Mehmood who says that he was waiting for them. How did he know they were going to come? What follows after staying there is a nightmare. Each night there is a murder. The killer chooses his victim each night leaving others in groping fear. They want to leave the place and go but where can they go? With no aid coming to their rescue they are trapped there and worse is that the killer is also there. Who can be the killer? Is it one among them or it is some evil force. (official distributor synopsis)