Latest / Nero: Mad Tyrant or Misunderstood Emperor? — Fexingo History / Nero's Poison Ring: Locusta, Poisoncraft, and the Death of Burrus
Transcript
- Lucas: So we've talked a lot about Nero's building projects, his artistic ambitions, the Great Fire — but there's a figure who keeps appearing in the background of these stories, a shadowy specialist in one of the empire's most secret trades: poison. Luna: You mean Locusta, right? The woman who supposedly made the poison for Claudius? Lucas: Exactly. Locusta — her name itself means 'locust', which tells you something about how she was viewed. She was a poisoner, a venenarius, and she operated in the imperial court under Claudius, Nero, and likely others. She's mentioned by Tacitus, Suetonius, and Cassius Dio, and she's one of the few women in Roman history whose name is specifically tied to a craft — a deadly one. Lucas: Now, most people know the story of Claudius's death in 54 AD — Agrippina supposedly served him poisoned mushrooms. But the details are fascinating. According to Suetonius, the poison was prepared by Locusta, and it was administered by his taster, a eunuch named Halotus. The mushroom itself was laced with a potent toxin, likely from the atropa belladonna plant — deadly nightshade. Luna: Wait — belladonna? Isn't that the stuff that dilates pupils? Lucas: Same plant, yes. The name 'belladonna' literally means 'beautiful woman' in Italian, because Renaissance women used the juice to dilate their pupils for cosmetic effect. But atropa belladonna contains tropane alkaloids like atropine and scopolamine, which in high doses cause delirium, hallucinations, respiratory failure, and death. It's a classic poison — and one that would have been available in the Mediterranean. Lucas: But there's a wrinkle. Suetonius also says that when Claudius didn't die quickly enough — he vomited up the first dose — Locusta allegedly had to administer a second poison, this time in broth, maybe aconite, which is a fast-acting cardiotoxin. So she had to adapt on the fly. That suggests real expertise. Luna: So she was like a professional poison chemist — but without the lab coat. Lucas: Exactly. And the court certainly saw her as a resource. When Agrippina wanted to eliminate Claudius, she didn't just grab any mushroom — she went to a specialist. Locusta had a reputation. And that reputation only grew under Nero. Lucas: Because the next big job was Britannicus, Claudius's biological son and Nero's stepbrother — a direct threat to the throne. In 55 AD, just a year into Nero's reign, Britannicus died suddenly at a dinner party. The official story was an epileptic seizure, but Tacitus tells a different tale. Luna: A poisoned drink, right? At a banquet? Lucas: Yes. According to Tacitus, Nero ordered Locusta to prepare a poison strong enough to work instantly. But the first batch was too weak — Britannicus only got sick. So Nero forced Locusta to brew a faster version right in front of him. The second attempt succeeded. At a formal dinner, Britannicus was served a hot drink that was tasted first, but when he complained it was too hot, it was diluted with cold water — water that already contained the poison. He collapsed and died within moments. Luna: That's chilling. And she just kept working after that? Lucas: She did. In fact, Nero rewarded her with a pardon for any past crimes, a substantial property, and even students to train. She became a kind of imperial asset. And she wasn't the only one — there was a whole network of poisoners in Rome, but Locusta was the star. Luna: So what happened to her? Did she survive Nero? Lucas: She did — but only to be executed by Galba in 68 AD, after Nero's fall. Galba had her paraded in chains and then killed, along with other of Nero's 'instruments.' It was a symbolic purge. Lucas: But here's where it gets really interesting for understanding Nero's reign. The death of Britannicus removed a rival, but it also set a precedent: poison was now an acceptable tool of state. And we see that again in 62 AD, when Nero's trusted advisor Burrus died under suspicious circumstances. Luna: Burrus — the Praetorian Prefect? I thought he died of a throat infection. Lucas: That's the official story. Tacitus says Burrus developed a swelling in his throat that gradually choked him. But he also notes that Nero was increasingly suspicious of Burrus, who had been a moderating influence alongside Seneca. And Suetonius hints that Nero may have had him poisoned. Given Locusta's track record, it's plausible. Lucas: Now, whether Nero actually ordered it or not, the death of Burrus had massive consequences. He was replaced by two prefects: Faenius Rufus, who was more of a bureaucrat, and Ofonius Tigellinus — a ruthless, loyal henchman. With Burrus gone, Seneca's influence also waned, and Nero's government became more authoritarian. Luna: So it's like the death of Burrus was a turning point — it removed the last check on Nero's worst impulses. Lucas: Exactly. And poison was the weapon that made it possible — quiet, deniable, effective. Locusta and her craft were central to that shift, even if she wasn't directly involved in Burrus's case. She symbolized the dark side of imperial rule: the willingness to kill in secret. Luna: You know, this episode has really changed how I think about Nero. It's not just about his madness or his art — it's about the machinery of power, and the people who ran it behind the scenes. Lucas: If today was actually useful to you, the way these stay ad-free is listener support — buy me a coffee dot com slash fexingo. It's a small way to keep these conversations going. Luna: Yeah, honestly, every bit helps. We love digging into these stories, and knowing people find them valuable makes it all worthwhile. Lucas: So, back to Locusta. One thing I find remarkable is that we actually have some idea of the recipes she might have used. Pliny the Elder and Dioscorides both describe poisons like aconite, hemlock, and opium. And there's evidence that Roman poisoners understood dosage and synergy — they could make a fast-acting or a delayed poison. Luna: Opium? That would be more of a sedative, right? Lucas: Yes, but in high doses it can cause respiratory depression. And it was often combined with other substances. The point is, Locusta wasn't just a cook with bad intentions — she was a skilled toxicologist in a world without the scientific method. Her knowledge was passed down through apprenticeship, and it was valuable enough that Nero gave her students. Lucas: And there's a political dimension too. After the Pisonian conspiracy in 65 AD, when many senators were executed, some were forced to commit suicide by poison — and it's likely that the poison came from imperial stores, possibly even from Locusta's workshop. She was, in a sense, a state executioner. Luna: So she was like a secret weapon — literally. A weapon that left no marks. Lucas: Exactly. And that's why her story matters. It's not just a lurid detail — it's a window into how power actually operated in the Julio-Claudian court. Poison was the invisible knife, and Locusta was the hand that wielded it.