The Trent Fire started out when many Cahills who thought Hope Cahill and Arthur Trent knew some valuable information came to their house demanding a recently found Clue. Isabel Kabra, the most vicious Cahill there, a Lucian, came in the house and held their young daughter, Amy, asking what the design on her pajamas was. Amy told her that they were koala bears, and Isabel instantly knew that Arthur and Hope had been in Australia.