Dhund is a 1973 Hindi movie produced and directed by B. R. Chopra. The film is based on Agatha Christie

Agatha Christie

Dame Agatha Christie DBE was a British crime writer of novels, short stories, and plays. She also wrote romances under the name Mary Westmacott, but she is best remembered for her 66 detective novels and 14 short story collections , and her successful West End plays.According to...

's play, The Unexpected Guest

The Unexpected Guest (play)

The Unexpected Guest is a 1958 play by crime writer Agatha Christie.The play opened in the West End at the Duchess Theatre on 12 August 1958 after a previous try-out at the Bristol Hippodrome. It was directed by Hubert Gregg.-Plot summary :...

, and stars Sanjay Khan

Sanjay Khan

-Career:Khan made his debut in the 1964 Chetan Anand film "Haqeeqat" followed by the Rajshri film Dosti. In the 1960s and 1970s Khan starred in the movies Dus Lakh, Ek Phool Do Mali and Intaqam. He also acted opposite his brother Feroz in three films Upaasna , Mela and Nagin...

, his then flame Zeenat Aman

Zeenat Aman

Zeenat Aman is an Indian actress who has appeared in Hindi films, notably in the 1970s and 1980s. She was the second runner up in the Miss India Contest and went on to win the Miss Asia Pacific in 1970...

, Danny Denzongpa

Danny Denzongpa

Tshering Phintso Denzongpa , widely known by his acting name "Danny" Denzongpa, is an Indian actor of Sikkimese ancestry working in Bollywood films....

, Deven Verma

Deven Verma

Deven Varma is an Indian film and television actor, particularly known for his comic roles, with directors like Basu Chatterji, Hrishikesh Mukherjee and Gulzar. He has also produced and directed some films including Besharam...

, Madan Puri

Madan Puri

Madan Puri was an actor in Hindi and Punjabi films.-Early life:Madan Singh Puri was born in Nawanshahr, Punjab to S. Nihal Singh Puri and Ved Kaur...

, Navin Nischol

Navin Nischol

Navin Nischol was an Indian actor. He made his debut with the Hindi film Sawan Bhadon in 1970.-Early life:...

 and Ashok Kumar

Ashok Kumar

Ashok Kumar also fondly called Dadamoni was an Indian film actor. Born Kumudlal Ganguly in Bhagalpur, Bengal Presidency he attained iconic status in Indian cinema...

. The music is by Ravi

Ravi (music director)

Ravi Shankar Sharma , often referred to mononymously as Ravi, is an Indian music director, who has composed music for several Hindi and Malayalam films...

.

Dhund is the story of a young woman (Zeenat Aman), whose invalid husband (Danny Denzongpa) is murder

Murder

Murder is the unlawful killing, with malice aforethought, of another human being, and generally this state of mind distinguishes murder from other forms of unlawful homicide...

ed. The finger of suspicion points at the young widow and her former boyfriend (Sanjay Khan), but the killer is someone else. It is a taut thriller with a fantastic performance by Denzongpa. Two of the songs, "Sansar ki har sheh ka" and "Uljhan suljhe na" were hits.

Plot

Zeenat Aman is married to Danny Dengzongpa. Danny is a rich but wheelchair ridden man. Since Aman is a beautiful woman, Danny is paranoid & his constant taunts & accusations make Aman's life miserable. One day, Sanjay Khan, a stranger comes to their home. Exasperated with her husband, Aman suddenly gets attracted to Sanjay.

Danny senses this tension & makes their life miserable. Sanjay decides to have a talk with Danny & give him a piece of his mind. Danny is in his room, locked from inside. Aman, who fears that Danny might harm Sanjay, tries to convince Sanjay from talking to Danny. Just then, a plane passing from a nearby airport drowns all the noise. Khan bursts into Danny's room only to find him dead. Circumstantial evidence makes Khan the murderer.

The murder case is taken to the court, where Khan is tried for murder & Aman for abetment to murder. Just as their end seems near, Navin Nischal, another stranger, makes an entry. None of the persons in the case know him, but he claims to have an important information regarding the case. Navin tells the court that Danny had raped a girl & drove her to suicide while he was in college. The girl's lover tried to find Danny & finally tracked him. It was this lover who killed Danny.

However, after the murder, the killer ran into the girl, who was living as a nun under another name. After hearing his confession, the girl told him to tell the truth to the world. Thus, Navin reveals himself as a murderer & surrenders the murder weapon. Sanjay & Aman are exonerated.