"A sinister deception": Prosecution's closing address begins

The prosecution has begun its closing address to the jury, outlining four key deceptions it says underpin Erin Patterson's guilt.

Rachael Brown and Stephen Stockwell recap these four alleged deceptions, and how the prosecution attacked Erin's evidence in the witness box, saying she made a "ridiculous and obvious lie".

If you've got questions about the case that you'd like Rachael and Stocky to answer in future episodes, send them through to mushroomcasedaily@abc.net.au

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It's the case that's captured the attention of the world.

Three people died and a fourth survived an induced coma after eating beef wellington at a family lunch, hosted by Erin Patterson.

Police allege the beef wellington contained poisonous mushrooms, but Erin Patterson says she's innocent.

Now, the accused triple murderer is fighting the charges in a regional Victorian courthouse. Investigative reporter Rachael Brown and producer Stephen Stockwell are on the ground, bringing you all the key moments from the trial as they unravel in court.

From court recaps to behind-the-scenes murder trial explainers, the Mushroom Case Daily podcast is your eyes and ears inside the courtroom.

Keep up to date with new episodes of Mushroom Case Daily, now releasing every day on the ABC listen app.