An unsolved chain of nine murders has inspired filmmaker Chitraselvan to make a multilingual film.

"There is a story behind all multiple killings to be told because every macabre incident has a perfectly natural and ordinary reason that triggers criminals. This has to be exposed properly", said Chitraselvan.

Entitled ‘Psycho’, the movie will be made in Telugu, Malayalam and Tamil.

Nine people - mostly middle-aged night watchmen - have been murdered with their heads bashed in Chennai's southwest suburbs in the last few months.

Despite similarities in the murders, Chennai Police Commissioner R. Sekar is yet to subscribe completely to the "serial killing" theory propounded by the media.

"We are looking at all angles," Sekar had told the sources.

Films made on real life crime incidents have done well in the south.

Killer ‘Auto Shankar’, who raped and murdered several women and was hanged in April 1995, was obliquely eulogised in a movie ‘Pulan Visaranai’ (crime investigation).

The 1984 film ‘Nooraavathu Naal’ (100th Day) directed by actor Manivannan proved to be the inspiration for psychopath Jai Prakash from the outskirts of Chennai's southwest suburb of Virugambakkam to kill more than nine people till the law caught hold of him.

However, it was director Bharti Raja, who introduced the concept of a suave, but mentally deranged killer through his 1978 classic ‘Sigappu Rojakkal’ starring Kamal Haasan.

Top police officials have frowned upon criminals being given a larger than life image in the celluloid world.

Tamil Nadu Additional Director of Police K. Vijay Kumar (under whose supervision, forest brigand Veerappan was shot down in a gun battle) in a recent seminar in Kerala, squarely blamed filmmakers for instilling criminal tendencies in the youth through movies.