Warning: This episode contains descriptions of child sexual assault.  Between 1987 and the early 1990s, Melbourne’s suburbs experienced a series of highly organised and disturbing home invasions. The intruder would tie up the parents, cut the phone lines, and demand money, but at the centre of each attack was the sexual assault of a young daughter. Police investigations quickly linked the crimes to a single, elusive perpetrator; whose planning, control, and forensic awareness set him apart from typical offenders. The media would refer to him as, Mr Cruel.