In 1996 the Greater Manchester Police initiated a special operation called Enigma. Operation Enigma set out to look for a pattern in the deaths of several women who were found murdered between Liverpool and Manchester. Their results were horrifying. Of the two-hundred and seven unsolved murders between 1986 and 1991, seventy were found to be split into twenty-one clusters of activity. Rather than one serial murderer who had killed Linda Donaldson in 1988 and Maria Requena in 1991, they were possibly looking at as many as twenty-one.

Music by Russel J White