Clive Small resigned in 2007 "as the Independent Commission Against Corruption's chief investigator as he gears up for his libel action against broadcaster Alan Jones.
"Mr Small, a former NSW Police assistant commissioner who has twice been rejected for the force's top job, confirmed to The Daily Telegraph Online that he had tendered his resignation from ICAC yesterday." 
In a 2009 interview Small notes: "I knew something about organised crime and police corruption, having co-written a book about the events in Queensland that led to the Fitzgerald inquiry. It was called The Bagman. My co-author was the crooked detective Jack Herbert, who rolled over to save his own skin and lived for years afterwards on witness protection. But the corruption in Queensland was child’s play compared with the graft that the Wood Royal Commission and the Independent Commission Against Corruption uncovered a decade later in the NSW police force...
"As an investigator on the Woodward Royal Commission into Drug Trafficking, and afterwards on the Commonwealth-State joint task force investigating the Nugan Hand merchant bank (he was commended for his work on both), Small had a chance to study every facet of organised crime in Australia. Like others, he waited in vain for the findings of both reports to be translated into government action." 
- Clive Small and Tom Gilling, Smack Express: How Organised Crime Got Hooked on Drugs (Allen & Unwin, 2009).