Teesri Manzil (1966)
(Released: Oct 21, 1966)

Cast
"Teesri Manzil" means third floor of a building. A woman named Ruby is killed and her body is thrown off of the third floor of a building. The police are called in to investigate, and they are assisted by Anil (Shammi Kapoor), who was a friend of Ruby. The prime suspect in Anil's eye is Ramesh (Prem Chopra), who has been lying about his alibi, and also about his relationship with Ruby. But the police have a clue - an expensive button from an overcoat and it is more than likely that this coat belongs to the killer, who is very wealthy. Ruby's sister Sunita (Asha Parekh) believes that a singer named Rocky has a hand in her sister's murder and is out to do the investigation herself. Who is Rocky? What was his relationship with Ruby?