As the name of the film suggests Teesri Manzil.The film starts with a girl climbingup a staircase and in second shot shown as dead. The story revolves around the murder mystery of Rupa. The girl sister (Asha Parekh)Sunita decides to take revenge of her sisters death. In turn get chased by a guy(Anil Kumar)Shammi Kapoor and falls in love with him, who plays a role of a lead singer in drummer of his band in this film. Ruby(Helen) justify's her role as a dancer to Rockey's band and has soft corner for him. She is subject to Rockey's telephonic conversation with Rupa.(Sunita's sister) on the day she was murder. She (Helen) threatens Rockey from time to time whenever he shows interest in Sunita. Ramesh(Prem Chopra) on the other hand admonishes Rupa for her closeness to Rockey and threatens to kill her for cheating him. Another charaters in shades of Grey is Kunwar Saheb(Premnath) who plays a key role in this film and his link to th murder mystery. Thus story enfolds and the way ? women is worth watching.