Three Detectives And A Murder

A series of murders has happened within a few days.

People are getting restless, the police are clueless and one person is the cause of this madness. The night holds the clues to solve this mystery. A simple girl is connected to the series of murders. A group of dectectives tries to investigate the connections between the murders and the girl.They found a clue that opens up a variety of possibilities of who the killer is.

Who is the murderer?
Why is he doing it?
Would the group be able to catch him?

Or would the killer get away with the murders?