A Lawyer’s Analysis of the Erin Patterson Verdict: Lauren Cassimatis on 4BC Drive

Following the guilty verdict in the high-profile Erin Patterson trial, I was invited by 4BC Drive to provide my expert legal analysis on the case. With the verdict now delivered, the public discussion has naturally turned to ‘what happens next?’. The law provides a 28-day window for an appeal to be lodged, and the most common question I’m being asked is: on what grounds could an appeal be successful?

This article is based on the analysis I provided on-air, exploring the key legal principles and potential avenues for appeal in a complex, circumstantial case like this one.

Here is a summary of the key points I discussed on-air:

• The Power of a Circumstantial Case: Lauren explains that without direct evidence, the prosecution’s success hinged on its ability to weave together many individual pieces of evidence—like a jigsaw puzzle—to form a single, logical conclusion beyond a reasonable doubt.
• The Importance of “Consciousness of Guilt”: A critical factor was the evidence of “post-offense conduct.” Lauren notes that lying to police, attempting to cover tracks, and inconsistencies in her story were used by the prosecution to argue an admission of guilt.
• Potential Grounds for Appeal: She identifies the two most likely avenues for an appeal: a potential error in the judge’s legal direction to the jury, or arguing that the verdict was “unsafe and unsatisfactory” given the intense media attention, a precedent famously used in the George Pell case.
• The Challenge of “Motive”: Lauren provides a balanced view, acknowledging that the biggest element of doubt in the case was the prosecution’s concession that there was no clear motive for the crime.

Full Interview: Lauren Cassimatis on 4BC Drive Discusses the Patterson Verdict

Erin Patterson is guilty of murder. We can confirm that Erin Patterson has been found guilty on all charges and you have it guilty on all charges. It’s been a fascinating trial. This from start to finish, and it’s not over yet. We’ve still got sentencing and any appeals that may happen. Joining me on the line this afternoon is one of Victoria’s highly regarded criminal lawyers, Lauren Cas.

Lauren, thanks for taking time to join us here on four BC Drive. Thanks for having me on. You’re at the heart of it down there in Victoria. We think it’s dominating news up here. It’s dominating everything down in Victoria. It was a very long case and people watched and waited for the verdict.

What was the primary reason for the case taking so long? In terms of the verdict itself taking so long, I think it had to do with the fact that one, the jury was just taking their job so seriously. They, they have to form a decision beyond reasonable doubt and also in terms of the case duration and therefore the verdict as well.

This was a circumstantial case, so they didn’t have direct evidence of. Her actually intending to or committing the act itself. So what the prosecution relied on was a variety of, evidence, so almost like pieces of a jigsaw puzzle. So that took a while to get through and to be challenged and assessed.

And also for the jury to really, decide whether the only infants they could draw was that, she intended to, to harm these victims. Have you in your professional career. Have you ever known a story like this, and why do you think so many people have been fascinated by it? A Christie type story that you don’t often see before the courts.

I mean, every now and then you get a murder. That’s a bit of a, who done it mystery and that fascinates the community, this case. Yeah. I think it just was so unbelievable. She’s from a regional town. She’s a family woman. There was no motive for her to do this. Good local people. It, it could happen to anyone I think as well.

Think it was just a fascination ’cause it was so close to home and it was so. Unexpected and, it actually happening. Lauren, I mentioned earlier today, and I guess there’s a massive thirst and fascination around true crime Docos now, isn’t there?

Like, whether it’s podcasts and nine make a stack of wonderful True Crime podcasts, but even documentaries on Netflix, there’s just there’s just a hunger for true crime stuff too at the moment, isn’t there? Mm. I think it’s just a real fascination with a world that most of us aren’t part of. So it just draws the veil back.

And there’s a whole other world where people come from a background or a lifestyle that most of us have never experienced, and then to get into their mindset and understand why the crime was committed, what drove it, and even moving forward, what. It means for them and the victims and their families.

So, yeah, I think going back to even look at the fascination with Chopper and, Ned Kelly, even there’s, there’s something about, true crime that in a way glorifies people as well at times, and we, we get hooked. Mm-hmm. Hey, from your point of view, what, what key piece of evidence do you think was the driving force behind her being found guilty?

Again, it was a circumstantial case. So I think there was a variety of, various pieces that together in combination, is what was the nail in the coffin for us. So I think for me, there was this, a consciousness of guilt evidence. So her post-offense conduct, namely lying to police, trying to cover her tracks.

You know, not disclosing the phone, that that all goes towards what the prosecution used as a consciousness of guilt. So, or in other words, an admission of what happened. So I think that probably for her was the biggest problem. Along with just certain evidence, not stacking up, for example, the dehydrator and, having a different plate for herself and her not being, as unwell as the others, but just in combination that, that’s what I think was.

The biggest issue for her. Yeah. It seemed to be a few holes in her story. Times. There are talks that Erin Patterson could appeal her conviction On what grounds could she appeal? So it’s gonna be, it’s gonna take a lot of assessment by her legal team. You can’t really get your foot into the court of appeal that easily.

So what I think what will happen with this case is they’ll assess whether one, the judge directed the jury properly. So once all the evidence is put forward, the judge has an obligation to direct the jury on the law. So, if. The judge made an error in terms of the law and the way they should assess the evidence.

That could be an appeal ground. The other one is, George Pell. It’s called Unsafe unsatisfactory Verdict. Given all the media attention and the fascination, it might be that there’s a ground to say. The jury didn’t take the evidence into account in the best way possible or that there was, flawed reasoning in their deliberation, and therefore the verdict was unsafe and unsatisfactory.

The legal team’s gonna have to go through all the transcripts and make a decision, think those are the two grounds that stand out for me. Uh, chatting to Victoria, criminal lawyer, Lauren Casus, who’s filling us in on the Mushroom Murderer and the whole trial, how, if there is an appeal.

How soon do you think that would happen, Lauren? They’ve got 28 days to file. Right? Every now and then again an extension. But yeah, I think watch this space in about a month’s time. Righto. And were you ever in doubt that she may have not have been found guilty? Do you think that was gonna be the guilty verdict, was gonna be the obvious decision?

Because I, I was watching the trial and the stuff I was hearing, I was going. Oh geez. I think she’s guilty. You know? But there was that element of doubt in the back of your head, wasn’t there? Yeah, correct. I’ve been speaking to very, senior council who all shared the same view as you.

That on the one hand you go, no, it doesn’t add up. Yeah, she had to have done it. But then there, there were elements of doubt. I think for me, the biggest doubt was the motive or lack of motive that the prosecution conceded. For example, she wasn’t driven by money. There was no hatred, there was no evidence for her to plan these attacks.

Any justification behind it. So I think the motive was flawed, which I think created doubt for me. And then even her explanation around the deadly mushrooms, an expert witness actually said that there were indeed those mushrooms in her area. So they were easily accessible, and it might have well been that she did accidentally, come across them and make a mistake as to the nature of them.

I think there was some doubt there, but I guess ultimately the jury just found it. Again, when you look at the evidence in its entirety, that that was satisfied beyond reasonable doubt that, she intended to do this and it was calculated and planned. There it remains a mystery as to why.

But yeah, she, she did it. And, that’s what we are left with at the moment. She’ll never. See time outside again. She’ll be behind bars for the rest of her life, I could imagine.

I agree with you. In Victoria here, we have what, we call a standard sentencing scheme. The judge uses a guidepost, as a guide they have to impose 25 years or so for one murder. But now that there are three plus an attempted murder, it’s gonna be the case that she’ll be getting, life without parole.

Well, it’s the case that has just absolutely gripped a nation and even overseas.

Beyond the Headlines: A Deeper Perspective

The widespread public interest in the Patterson case highlights broader questions about the complex pathways that can lead women into the criminal justice system. Often, these stories involve deep-rooted issues that are not fully captured by the headlines.

In a follow-up piece, our Principal Lauren Cassimatis explores this issue further.

Read Lauren’s follow-up analysis: Why Many Women End Up in Prison — And Why We Need a New Approach