Watch: Three things you need to know about the mushroom murder trial

Woman Accused of Poisoning Relatives with Deadly Mushrooms Cross Examined in Court

An intriguing murder trial is making headlines worldwide. Erin Patterson, an Australian resident, is accused of poisoning her relatives with deadly mushrooms. Prosecutors claim photos on Patterson's phone show her using kitchen scales to measure a lethal dose of death caps. Her in-laws, Don and Gail Patterson, and Gail's sister, Heather Wilkinson, all fell ill and died after dining at Patterson's home. Katy Watson, the BBC's Australia correspondent, breaks down the three key things to know about the trial so far: