12 O Clock
When Bani Chowdhury (Waheeda Rehman) stay's with her leaves with her kindly uncle, a retired army captain (Hari Shivdasani). Bani gets herself a stenographer's job in an solicitor's office. Soon the solicitor Ajoy Kumar (Guru Dutt) and Bani find themselves in love. But suddenly a tragedy happens and havoc steals into their life.Bani's cousin, Maya is found dead in first class compartment at a railway terminus in Bombay while returning from Delhi with her new born babe. Bani who has gone to the station to meet Maya, is charged with the crime. Ajoy is distraught with grief. He is certain that his Bani is innocent. He begins to comb the country for every available clue. He is aided in his search by his virile assistant Motilal Sharma (Johny Walker).And all the while, Ajoy probes and sifts every little bit of evidence of the crime he can discover and just when everything seems lost and the noose fastened on Bani's neck. Ajoy gets a break. And from then on, things begin to happen. From then on, thrills gallore, music, comedy, laughter, suspense-in fact all the ingredients of human drama, begin to play their respective parts to wind up our story ultimately on a crashing finale in which evil-doers get their desserts and the happy lovers are reunited....!