Mr Sudhangshu Gupta is a respected officer in his late 30s. He is widowed a few years back after his wife attempts a suicide. He has moved on and is going to marry for the second time with a woman she met on a trip, Miss Soma. On a parallel frame the movie unveils a man, who has minutely worked out a plan to showcase that Gupta's wife is still alive and had come back searching for him. He has set people all around Mr Gupta, he even managed to set Gupta's personal servant to his side and thus acquires access to his private belongings. When everything is planned ingeniously, on the day of Gupta's second marriage, Karanjakkho Samadder the mastermind of this whole conspiracy sends a woman(dressed as Gupta's undead wife) to their ceremony. A scene is created and the marriage comes ar a halt. In the following days the matter goes into court, the accusing party(undead wife of Mr Gupta) holds a number of proofs, while the defending party nullifies them. A paradox of evidence is created and slowly the accusing party finds a better of them to a certain point where it will be so promising to the viewers (of the movie) that one can believe the accusing party to be true, although the parallel sequence of the movie will not let you be sure. As the case goes on being more and more complicating and confusing the movie will reach its climax, at this point out of nowhere a twist comes that will rewrite the character build up of the protagonist and with that everything will fall in place and the cloud of confusion will slowly unveil.
In summarisation the storyline is extremely well done and every details are kept in mind. This is a well established and executed thriller, although the storyline isn't a continuous rising one, but more of a slow pace continued with a sudden climax that reveals the twist.
As per acting goes, there's no doubt its executed perfectly, although I'll say some characters are framed more in a comical way keeping in mind its commercial side.
Talking of commercial side, it will be better to say this movie is one such, camera angles, scene progression are very evidently commercial.
I suggest every thriller lover to watch this movie, it's made in the early 1960s and thus it's not that much engaging and ornamental to the eyes, but if one catches on the storyline with utter interrest, I'm sure he/she will love it.