Devil/Satan) is a 1974 Hindi thriller film, directed by Firoze Chinoy starring Shatrughan Sinha and Sharmila Tagore in main roles.
Majrooh Sultanpuri wrote the songs for this film while Rahul Dev Burman was the music director.
Anand (Shatrughan Sinha) and Munish (Anil Dhawan) are two best friends.
Anand is an honest police officer whereas Munish is the most famous lawyer of the city.
The confusion arose because the actual killer is Anand's lookalike Ashok.