Brimble, a 42-year-old mother of three from Brisbane, died within 24 hours of boarding the P&O Cruises cruise ship Pacific Sky on 23 September 2002, apparently due to ingesting a combination of alcohol and an overdose of the drug gamma-hydroxybutyrate, otherwise known as "GHB" or "fantasy".
Toxicology reports later revealed that the amount of the sedative drug in her system was three times the amount that a recreational user would have used.