Teesri Manzil (English: "Third Floor") is a 1966 Bollywood thriller directed by Vijay Anand and produced by Nasir Hussain. It starred his regular actors Shammi Kapoor, Asha Parekh, along with Laxmi Chhaya, Premnath, Prem Chopra, Iftekhar, Helen, K. N. Singh and Salim Khan. The film became a bumper hit at the box office. Indiatimes Movies ranks the movie amongst the Top 25 Must See Bollywood Films.
(Summary from Wikipedia)