The Poison Garden: A Natural History of Botanical Murder

There is a foxglove on my desk. I bought it for three pounds fifty, between the petunias and the pansies. It contains enough poison to make the evening news.

The woman at the register didn't mention that. There's no law that says she has to.

This is a book about the oldest technology in human history. Not fire. Not the wheel. Poison - older than agriculture, older than writing, perhaps older than language itself. Before the first sharpened stone, someone watched an animal eat a plant and die, and thought: useful.

Step through the locked gate and meet them all. Locusta, who ran a school of poisoning under the protection of an emperor. Giulia Tofana, who sold death to six hundred women in vials marked with the image of a saint. The Victorian wife who bought murder for tuppence at the corner chemist. The nurse who brought soup. The king who poisoned himself a little every morning - until the day he begged for poison to work, and it refused.

The first chapters will make you feel clever. You'll learn the poisons, the poisoners, the brilliant tests that finally caught them. You'll think the danger belongs to the past, sealed safely behind glass and forensic science.

Then the walls begin to move.

Because the gap between what a laboratory can detect and what a knowledgeable hand can deploy is not closing. It is widening - every year, with every advance. And one question will follow you out of these pages and refuse to leave:

How many perfect murders happened last year?

Nobody knows. That's what makes them perfect.

From a flower on a windowsill to a sequence ordered through the mail, this is the true, strange, and unsettling story of the line between medicine and murder - a line measured in milligrams, and crossed by intention alone.

The plants are real. The poisoners are real. The garden is open.

And you have been standing in it your whole life. You just didn't know the names of the plants.

Now you do.