is a 1956 Indian crime thriller film directed by Raj Khosla and produced by Guru Dutt.

It stars Dev Anand, Shakila, Johnny Walker, K. N. Singh and Waheeda Rehman.

The film has Dev Anand playing a police inspector investigating a murder case.

[3] A newspaper editor, Shrivastav, is wounded when he was about to expose the underworld links of a rich and influential man.

Shekhar uncovers some of the gang, and Master identifies the killer Sher Singh, who is put in jail.

He is persuaded by Master to run away, knowing that he will have to prove who the real killer is by getting a chance to investigate.

She feels for him, realizes that Dharamdas is evil and that she should no longer be a criminal, and nurtures Shekhar nearly to health.

Just before he reaches the gate of the police station, Kamini is shot by Dharamdas' men, and then Rekha's father tries to get a full idea of the picture.

The Chief promises to recommend bail or drop the charges, and Rekha and Shekhar continue their romantic relationship.

Guru Dutt had spotted Waheeda Rehman in a Telugu movie and cast her in Pyaasa (1957), but gave her a key supporting role in C.I.D.

They interact with Bombay in a way that is more direct and hands-on than the others, and they know the ins-and-outs of the cops and robbers' games.

Anyway, the boss takes no chances and has Sher Singh bumped off, and frames Shekhar for both murders.

Pitting a suave Dev Anand against a shadowy criminal mastermind, the story is told with tempo and light and shade.

Add in the lush O.P Nayyar songs, a young and minxy Waheeda Rehman dancing to choreography by Zohra Sehgal, Johnny Walker actually being funny, and there is so much to love.

"[6] The song "Ae Dil Hain Mushkil" (also known as "Yeh Hai Bombay Meri Jaan"), performed by Mohammed Rafi and Geeta Dutt, is excellent for all times in the film.

The film was released on 30 July 1956 with a grand ceremony at the Strand, Minerva, Kohinoor and other theatres in Bombay (now known as Mumbai).

[7] Guru Dutt had reportedly gifted Raj Khosla a swanky foreign car after the success of C. I. D.[8] C. I.

D, directed by Raj Khosla, is a sleek entertainer which moves at a swift pace and is interspersed with good songs" However the critic felt that the story had many inconsistencies due to lack of proper understanding of police-court procedure and crime detection methods.

The critic also appreciated the performance of the lead cast writing, "As the police inspector, Dev Anand is very convincing.