Dev Anand tries to save his sister Zeenat Aman after she falls in with drug-addicted hippies. Also starring a cast of gora hippies raked off the beaches of Goa and/or shaken from the hostels of Kathmandu. Thanks to Little White Lies for this and Typewriter Tip etc. Singer: Asha Bhosle. A longer version here.
(Dum Maro Dum, roughly translated, means 'Take another toke.')