Detective Galileo Series

Professor Manabu Yukawa — known as "Detective Galileo" — is a brilliant physicist at Teito University who uses his extraordinary intellect and scientific method to solve baffling crimes. Introduced in 2005's The Devotion of Suspect X, Yukawa is one of the most iconic detectives in modern mystery fiction: cool, analytical, and endlessly curious about the human heart behind the science.

Only the Galileo novels featuring Yukawa as the primary detective are listed below. The series includes additional short stories and spin-offs in Japanese not yet translated to English.

The Devotion of Suspect X
2005

The Devotion of Suspect X

Originally published: 2005 (Japanese)
English edition: 2011
Translator: Alexander O. Smith

The novel that started it all. When Yasuko Hanaoka accidentally kills her abusive ex-husband, her neighbor — a brilliant but reclusive mathematician — steps in to orchestrate the perfect cover-up. But Detective Galileo, the genius physicist Manabu Yukawa, suspects the truth. A breathtaking battle of wits unfolds in what many consider the perfect crime novel. Winner of the Naoki Prize.

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Salvation of a Saint
2008

Salvation of a Saint

Originally published: 2008 (Japanese)
English edition: 2012
Translator: Alexander O. Smith

When a woman is found dead in her home with coffee brewed by her own hand and no evidence of anyone else's presence, it seems impossible — a locked-room mystery with no perpetrator. Her husband, a successful businessman, has a perfect alibi. Detective Galileo is called in to unravel a crime that defies logic. A masterclass in forensic fiction.

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A Midsummer's Equation
2011

A Midsummer's Equation

Originally published: 2011 (Japanese)
English edition: 2016
Translator: Alexander O. Smith

Galileo travels to a coastal resort town for a conference on deep-sea mineral mining. When a retired police officer is found dead at the base of a cliff, Yukawa becomes entangled in a case that pits environmental interests against corporate power — while a troubled boy holds the key to the truth. A moving blend of science, family, and mystery.

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Silent Parade
2014

Silent Parade

Originally published: 2014 (Japanese)
English edition: 2022
Translator: Giles Murray

A young girl's body is found in a burnt-out building. The prime suspect is a man who was already acquitted of a previous murder — and he seems to be taunting the police. When he is found dead during the town's autumn festival, the entire community becomes a cast of suspects. Galileo and Detective Kaga join forces in this gripping courtroom-adjacent thriller.

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Invisible Helix
2023

Invisible Helix

Originally published: 2023 (Japanese)
English edition: 2023
Translator: Giles Murray

The fifth Galileo novel. Two bodies are discovered on the coast of Japan — one recent, one decades old — connected by an invisible thread of DNA. As Galileo investigates, he uncovers a powerful family's dark secrets reaching back generations. This prescient novel explores the ethical boundaries of genetic science, family loyalty, and the price of progress.

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Reading Order

The Detective Galileo novels should ideally be read in publication order, as characters and relationships develop across the series. However, each novel works as a standalone mystery:

  1. The Devotion of Suspect X (2005) — The essential starting point. The novel that defines the series.
  2. Salvation of a Saint (2008) — Directly follows events from the first novel.
  3. A Midsummer's Equation (2011) — Galileo's most personal case.
  4. Silent Parade (2014) — A crossover event with Detective Kaga.
  5. Invisible Helix (2023) — The most recent translated installment.

The series concludes with Eternal Memory (2026), Higashino's final novel. Learn more →