O.P. Ralhan

Kumar, a thief by profession poses as the son of Raja Bahadur Singh to accept an invitation to the island of Sir John Locksley. The guests include K.P.W. Iyengar aka Romeo, Dr. Dubari, Colonel Columbus, and Countess Sylvia Rasmussen. A stunned Kumar finds out that all of these invitees are master criminals. Kumar's guise does not fool anyone, nevertheless Sir John permits him to stay on. The reason why John has invited them is to find a successor to take his place as he is dying of cancer. He feels that one of his invitees can be trusted to take his place and for this he has arranged for them to steal a ruby (Shalimar) worth 135 crores of rupees. This gem is placed in a secure room within his palace, which is alarmed, and guarded. He challenges one of them to steal the Shalimar - but if anyone fails then they are killed by the security system. Pitted against such veterans, it looks like Kumar has got himself into a bind that he may not come out of alive.

Shekhar is a Lothario. He's also the son of the Public Prosecutor. After his philandering has exhausted his parents' patience, he takes a fancy to Saradha and contrives to put her in a compromising position. She cannot escape from marrying him after her father accepts the Public Prosecutor's proposal of a union between their offspring. Shocked by his bride's contempt for his behaviour, Shekhar resolves to wait until his wife accepts him of her own volition. When she contracts pneumonia he gains the opportunity to win her love. However, an encounter with an old flame lands him in jail and Shekhar finds himself facing his father across a courtroom, charged with murder.

A business man must choose between keeping his promise to marry a poor village belle, or making it big by wedding his boss's daughter: a wealthy Westernized girl who bares a striking resemblance to his first love.

Peter (O. P. Ralhan) and Kitty (Helen) love each other, but due to Peter's poverty, they are unable to marry each other. One day, during a secret rendezvous, Peter accidentally overhear a conversation between one Mahesh Jetley and his paramour, where Mahesh tells her that he is soon going to bump off his wife on a certain date. Peter and Kitty decide to foil this man's plans. However, there are 2 problems: 1 - They have not seen Mahesh or his paramour's face. 2 - Even if they had, no one would believe their story. Hence, the lovers decide to do a little investigation on their own. They find three Mahesh Jetleys. On some snooping, they find that each man is married and each of them has a miserable married life. To find their suspect, they devise a plan whereby they will stage an attack on each man's wife. Whoever the culprit is, will freak out and his identity will be revealed.

After her return from abroad, Lali adjusts to life in India along with her devout Hindu mother, Laxmi; an easy-going father, Dinanath; two sisters, Kalpana and Geeta, and spends most of her time dancing along with her sisters and friends. On her way to the Mandir, she assumes a singer, Puranchan, is teasing her and she slaps him, but ends up apologizing when she is told that he is blind. Guilt-ridden, she makes arrangements for him to be taken to Bombay, has his vision restored, and both fall in love with each other. Dinanath takes a liking to Puranchan and not only gets him a job but also wants him to wed Lali. About to inform his parents, Purchan does not know that Dinanath has actually instructed Lali not to see him anymore as he is a Harijan (Lower-Caste).

Long lost siblings grow up on opposite sides of the law; the girl becomes a thief and the boy becomes a police officer.

Bishen raises his brother Kishen, who falls in love with Radham but loses vision after learning about her marriage. Bishen convinces Radha to undergo eye surgery.

Ratan and Chaman are twins brothers who love the same girl, Meera. During a fair, all three are separated. While Chaman and Meera are found, Ratan is untraceable. Years later, Chaman is no longer attracted to Meera, but in a dancing girl named Rasily, while Meera awaits word of her childhood sweetheart Ratan, who she feels is still alive. Then the unexpected happens, Chaman gets into a fight with another man, killing him, and is on the run from the police. Misunderstandings are clarified, and the law declares this to be an accidental death, and as a result Chaman returns. But this is not the same Chaman any more. For one thing, he has lost interest in Rasily, and is more interested in Meera - could it be that Ratan has returned in place of Chaman? If so, what has happened to Chaman?

Shyamu is an orphan, living with his mentor, and has lived a life of crime. While his partner is recuperating in hospital from a injury incurred on the job, Shyamu decides to go straight. In a case of mistaken identity, he ends up in showbiz and gets a gig as a playwright for a beautiful starlet when he shows up instead of popular writer Deepak, whom he looks just like, and is met with considerable respect. One day Shyamu goes to Deepak's house for something and discovers just how identical they are. Unfortunately, Deepak is on his death bed and Shyamu, reverting to his evil nature, "helps" Deepak along on the way to his demise and takes on his identity, even down to learning to copy his handwriting. But not everyone believes the goings on are all above board, especially Deepak's girlfriend and a certain police inspector.

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Circumstances have made Shaka a career criminal. When plague empties a town of its inhabitants, he takes the opportunity to burgle a house. He finds nothing except Shanti, a widowed daughter-in-law who has been left to die by her cruel relatives. Shaka nurses her back to health. When her relatives return they are not pleased to find her alive and even less pleased to discover that someone has tried to rob them. Shanti gets the blame and a beating. Shaka saves her from worse, at the hands of brother-in-law, and the pair flee. They set up home in Shaka's house, much to the displeasure of the respectable neighbours who are all too ready to think the worst.