Kab? Kyoon? Aur Kahan?

'Kab? Kyoon? Aur Kahan?' (lit. 'When? Why? And Where?') is a 1970 Bollywood mystery film directed by Arjun Hingorani. The film stars Dharmendra, Babita and Pran. It is inspired by the French classic film Les Diaboliques (1955; based on the 1952 novel She Who Was No More by Boileau-Narcejac), including the bathtub scene.

Cast

 * Dharmendra as C.I.D. Inspector Anand
 * Babita Kapoor as Asha Prasad
 * Pran as Daljit Prasad
 * Helen as Rita
 * Ashoo as Lata
 * Murad as Rai Bahadur Jagdish Prasad
 * Asit Sen as Constable Hanuman Prasad
 * Jankidas as Masoom Ali
 * Hari Shivdasani as Police Superintendent Gupta
 * Dhumal as Stewart
 * Mohan Choti as a taxi driver
 * Arjun Hingorani as Bihari

Soundtrack
Lyrics written by Anjaan and Indeevar.