Ian Caldwell

Dustin Thomason

One part The Da Vinci Code, one part The Name of the Rose - A blazingly good yarn [and] an exceptional piece of scholarship ... A smart, swift, multitextured tale that both entertains and informs

The Da Vinci Code for people with brains

A stunning first novel ... if Scott Fitzgerald, Umberto Eco, and Dan Brown teamed up to write a novel, the result would be The Rule of Four. An extraordinary and brilliant accomplishment - a must read

An assured piece of fiction that weaves together the past and the present seamlessly ... I enjoyed it tremendously

A marvellous book with a dark Renaissance secret in its coded heart

Tom Sullivan, about to graduate from Princeton, is haunted by the violent death of his father, an academic who devoted his life to studying one of the rarest, most complex and most valuable books in the world. Coded in seven languages, the Hypnerotomachia Poliphili, an intricate mathematical mystery and a tale of love and arcane brutality, has baffled scholars since 1499. 
 
Tom's friend Paul is similarly obsessed and when a long-lost diary surfaces, they finally seem to make a breakthrough. But only hours later, a fellow researcher is murdered and the two friends suddenly find themselves in great danger. Working desperately to expose the book's secret, they slowly uncover a Renaissance tale of passion and blood, a hidden crypt and a secret worth dying to protect.

The Rule Of Four

About us

About Us (Header 4)

Kate-Atkinson

James-Baldwin

Marian-Keyes

haruki-murakami-320×320-1

Richard-Osman

Malorie Blackman

Lisa-Jewell

Charlie-Mackesy

Authors (Header 3)

Children&#039;s

Company

Discover

Fiction

Non-fiction

Penguin Classics

Penguin Shop (Header 5)

Useful links

Work with us

prhuk-authors

Penguin Shop: 3 Clothbound Classics for £33

Ian Caldwell

Praise for The Rule Of Four

This year's biggest publishing sensation

One part The Da Vinci Code, one part The Name of the Rose - A blazingly good yarn [and] an exceptional piece of scholarship ... A smart, swift, multitextured tale that both entertains and informs

The Da Vinci Code for people with brains

This year's biggest publishing sensation

One part The Da Vinci Code, one part The Name of the Rose - A blazingly good yarn [and] an exceptional piece of scholarship ... A smart, swift, multitextured tale that both entertains and informs

The Da Vinci Code for people with brains

This year's biggest publishing sensation

One part The Da Vinci Code, one part The Name of the Rose - A blazingly good yarn [and] an exceptional piece of scholarship ... A smart, swift, multitextured tale that both entertains and informs

The Da Vinci Code for people with brains

Follow penguin

Follow ladybird

Follow puffin

Sign up to the Penguin newsletter