Strong Poison by Dorothy L. Sayers — cover

Strong Poison

Strong Poison is a detective novel written by Dorothy L. Sayers and first published in 1930.

The story opens in an English courtroom, where a talented mystery novelist is on trial for the suspected poisoning of her former lover. The evidence looks damning: the victim died of arsenic, their relationship had collapsed, and she had both the knowledge and opportunity to use the poison. Yet the jury cannot agree, leading to a mistrial and leaving the question of guilt or innocence dangerously unresolved.

Enter an aristocratic amateur sleuth who becomes convinced that the accused woman is innocent and decides he must prove the truth where the law has failed. He dives into the victim’s past, unpicking a tangled knot of toxic relationships, financial schemes, and concealed motives. As he reconstructs the events leading up to the death, he discovers that almost everyone involved has something to hide.

Blending courtroom drama with classic investigative work, the novel explores the fragility of justice when prejudice and appearances intervene. It also delves into questions of personal integrity, moral responsibility, and the cost of loving in a skeptical world, as the sleuth’s determination to clear the accused becomes as emotional as it is logical.

"There were crimson roses on the bench; they looked like splashes of blood. The judge was an old man; so old, he seemed to have outlived time and change and death. His parrot face and parrot voice were dry, like his old, heavily veined hands. His scarlet robe clashed harshly with the crimson of the roses. He had sat for three days in the stuffy court, but he showed no sign of fatigue."

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Mystery Crime Fiction Justice Love Morality

Public domain (US)·No sign-up·DRM-free·Real text, not scans

Pages
243
Reading time
6 hours 35 minutes
Pace
Intermediate
First published
1930
Language
English

96 years later, still timely

Why Read Strong Poison in 2026?

A mystery novelist stands trial for poisoning her former lover, the evidence looks airtight, and the jury deadlocks. Sayers turns a courtroom cliffhanger into a clockwork investigation where prejudice proves as dangerous as arsenic.

Today's connection

Trial by public opinion has not gone anywhere. This novel watches appearances harden into facts - and shows the patient work required to pry them apart.

Justice on trial

When evidence misleads.

Invested sleuth

Detection turns personal.

Arsenic puzzle

Method hides the motive.

Perfect for Mystery lovers Fans of classic crime novels Readers interested in strong female characters

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About the author

Portrait of Dorothy L. Sayers

Dorothy L. Sayers · 1893–1957

Golden Age mystery with logic, theology, and style woven into fair play.

7 books by Dorothy L. Sayers in the library →

If this one stays with you…