Moffitt retired from the Supreme Court in June 1984, on reaching the mandatory retirement age of 70. The following year, he published a book on organised crime, "A Quarter to Midnight", which claimed that organised crime in Australia was far more extensive than governments were prepared to admit, that the National Crime Authority was a "lame duck" and that the close ties between the trade union movement and ALP governments was hindering the investigation of criminal activity in unions. In 1998 he wrote a book on the drug problem, "Drug Precipice", and followed by another book on the same subject, "Drug Alert", a simpler exposition of the problem. In 1999 he publicly criticised the opening of a legal heroin injection room in Kings Cross, Sydney and in 2000 he publicly commented that the prosecution of alleged World War II war criminal Konrāds Kalējs was unrealistic. In his last public address, in 2006, to the professional club, Probus, Moffitt revealed that the late crime boss Lenny McPherson had been a paid informant to his 1973-74 royal commission. On 29 April 1948, Moffitt married Heather Williams daughter of Mr F. Williams. Together they had two sons one of whom died of a heroin overdose which in part go some way to explain Moffitt's strident attitude towards illegal drugs. His son's death only served to redouble his efforts in relation to the war on drugs and organised crime.