Down Memory Lane - Gumnaam

This was a hindi movie which i have saw before when i was 9. Back at that time, i only know that this is a ghost story, and from that moment i keep looking forward to see this movie again. And last nite, my dream has been fulfill. I'm too excited to watch it until i have to skip the prime time show of 'Eragon'. I'm so devoted to this Hindi movie since it was 60's and it was the 1st-ever-made Hindi thriller at that time. The actor and the actress are Manoj and Nanda. And the story goes like this : 7 persons won the lucky draw and the prize is 2 weeks vacation in an island and they will be board with a private plane. On the way to the island, the plane had to land due to the engine problem. However, they have been abandon by the pilot. In the island,they have been disturbed by singing lady's voice (spooooooooky). The voice headed them to a bungalow where an anxious butler live there. As starting from that moment, one by one were found dead. The hero tries to solve the mystery and the conspiracy revealed when one of them pretended dead and kill the rest. The murderer motive is revenge towards the heroin (since her uncle dead with large money of a will). Finally, only four of them survive and manage to run out from the island. And for those who did not know (i just know), actually this movie is an adaptation from Agatha Christie's novel 'And Then There Were None'.