Ek Don Teen (1964)

Ashok and Srinivas are two youngsters in he CID department when their senior officer is killed Ashok takes the responsibility of finding him.Ashok and Srinivas meet Ameet and Suman and fall in love where he finds a person following them whose well known smuggler known as Malak to whom all the secret information is leaked from CID office by Rosie.Ashok manages to get hold of Malak but he escapes and later kidnaps Ameeta but gets shot dead by an unknown person outside palatial house.Ashok ,Srinivas,Suman along with Ameeta reach the spot where Malak was shot .But his body goes missing and they enter the palatial house to find the truth which has strange people where things seem not to be normal and has people operating according to orders of a unknown person.