Masterfully blending true events with fiction, this blockbuster historical thriller delivers a page-turning murder mystery set on the sixteenth-century Oxford University campus.Giordano Bruno was a monk, poet, scientist, and magician on the run from the Roman Inquisition on charges of heresy for his belief that the Earth orbits the sun and that the universe is infinite. This alone could have got him burned at the stake, but he was also a student of occult philosophies and magic. In S. J. Parris's gripping novel, Bruno's pursuit of this rare knowledge brings him to London, where he is unexpectedly recruited by Queen Elizabeth I and is sent undercover to Oxford University on the pretext of a royal visitation. Officially Bruno is to take part in a debate on the Copernican theory of the universe; unofficially, he is to find out whatever he can about a Catholic plot to overthrow the queen. His mission is dramatically thrown off course by a series of grisly murders and a spirited and beautiful young woman. As Bruno begins to discover a pattern in these killings, he realizes that no one at Oxford is who he seems to be. Bruno must attempt to outwit a killer who appears obsessed with the boundary between truth and heresy. Like The Dante Club and The Alienist, this clever, sophisticated, exceptionally enjoyable novel is written with the unstoppable narrative propulsion and stylistic flair of the very best historical thrillers.

“HERESY is a must-read for every fan of historical thrillers. S. J. Parris transports the reader back to an extraordinary time in history by mobilizing fascinating details, suspense, and fully drawn characters. Giordano Bruno turns out to be that rare hero, charismatic and nuanced enough to impel an encore, and to leave us asking for more from the gifted Parris.”
Matthew Pearl, New York Times bestselling author of The Poe Shadow and The Dante Club

"HERESY has everything - intrigue, mystery, excellent history and haunting sense of place.  The beginning of a wonderful new detective series."
-- Kate Mosse, New York Times bestselling author of Labyrinth and Sepulchre

“The famous scientist Giordano Bruno,erupts with volcanic force from the pages of S. J. Parris's spellbinding debut novel, Heresy. Blending the philosophical sleuthing skills of Brother Cadfael with the magic sorcery of Voldemort, Bruno cracks the secret code, unraveling a church conspiracy as deep and dark as that in a Dan Brown novel.”
—Katherine Neville, bestselling author of The Eight and The Fire

"Heresy is a riveting read. Rich in both historical detail and ingenious twists, S. J. Parris has created a character in Giordano Bruno that will endure. A true rival to C. J. Sansom."
—Sam Bourne, bestselling author of The Righteous Men

“Fascinating . . . The period is incredibly vivid and the story utterly gripping. Cadfael can't hold a candle to this.”
—Conn Iggulden, New York Times bestselling author of The Dangerous Book for Boys and Bones of the Hills

“A rich, dark and utterly gripping tale, paced to perfection and populated with a glorious cast of characters.”
-- Mark Mills, bestselling author of The Savage Garden and Amagansett
“Parris interweaves historical fact with psychological insight as Bruno, a humanist dangerously ahead of his time, begins his quest to light the fire of enlightenment in Europe.”
--Starred PW
“The murders stack up, the pace becomes helter-skelter and the action overloaded as Bruno, in pursuit of a corrupt Jesuit priest, confronts endless perils before justice is finally and bloodily served. Spirited storytelling, an appealing sleuth and a cool, mutilated villain will lead readers to hope this is the launch of a series.”

From The Washington Post

If proliferation is a sign of health, then the most vigorous member of the historical novel species must surely be the religious thriller. We know what to expect of these ecclesiastical romps: Sadistic clerics, heroic visionaries, ancient texts, torture chambers and a sprinkling of Latin are guaranteed whether the turmoil being depicted is the Protestant Reformation, the Roman Inquisition or some obscure schism.

The latest example of this thriving subgenre is "Heresy," by S.J. Parris (the pseudonym of British writer Stephanie Merritt), a vigorous philosophical thriller that wastes no time getting to the point. "They have sent for the Father Inquisitor," a desperate monk whispers to his cellmate. "There is no time to lose." Along with this rallying cry -- the first of many -- we can practically hear the galloping of hooves and the creaking of thumbscrews.

The monk in question is Giordano Bruno, the 16th-century Neapolitan philosopher who was finally burned at the stake for his belief in an infinite, Copernican universe. (The actual Bruno was a Dominican friar. "Heresy" ends well before his execution, although a planned sequel may take us there.) We meet our hero in 1576, in the monastery's latrine, where he has retreated to read Erasmus's forbidden "Commentaries." Discovered by his superiors, he is soon on the run, making first for "the lion's maw" of Rome. "I was not afraid to die for my beliefs," he asserts, "but not until I had determined which beliefs were worth dying for."

The philosopher's subsequent adventures in Italy and France are revealed throughout the novel as intermittent recollections, but the main plot, which takes place in 1583, is planted firmly on English ground. There the young visionary accepts a more earthly mission. At the behest of Sir Francis Walsingham, Queen Elizabeth's spymaster, Bruno reluctantly agrees to use his time at Oxford University -- where he has been invited to debate the rector -- to investigate a suspected papist conspiracy against the Protestant crown.

"No man in Oxford is what he seems," one scholar declares. Nor is Bruno, of course. We soon learn that he is in Oxford not primarily to win a philosophical debate or to expose papists but to find "the lost book of the Egyptian high priest Hermes Trismegistus." This book, the 15th volume of a fabled Hermetic treatise, reportedly contains "the lost wisdom of the Egyptians, a secret that could destroy the authority of the Christian church" by revealing "the secret of knowing the Divine Mind."

Parris, an economical writer, keeps the mysticism in check as she portrays Bruno, with his sly, agile intelligence, encountering the dark, introverted world of Oxford, where fear and suspicion prevail. Foul weather and dank courtyards, both vividly described, conceal not only dissent, it turns out, but murder. First the college sub-rector is killed by a half-starved wolfhound, unleashed by an unseen hand. Then, as subsequent murders terrorize the college, the rector asks Bruno to investigate, a task that complicates not only his earlier mission but also his involvement with the rector's beautiful and intellectually rebellious daughter.

The fact that each gruesome murder is apparently inspired by the executions depicted in John Foxe's "Actes and Monuments," a chronicle of Protestant martyrdom, hints at a papist killer. Or is this merely a ruse? Cryptic clues accumulate as Bruno is drawn into an underground world of hooded priests, secret Masses and outlaw romance.
The final showdown, like many other dramatic moments in the novel, recalls similar scenes in countless adventure novels; and Parris's dialogue -- courtly one moment and modern the next -- often seems unmoored from the novel's era.

Nevertheless, Bruno commands our attention and our sympathy as any likable heretic should. "I hate no-one," he declares as his own death seems imminent, "I want only to be left in peace to understand the mysteries of the universe in my own way." To which the murderer sneeringly replies, "Ah. Tolerance." By this stage, the plot has -- perhaps belatedly -- broken out of claustrophobic Oxford and made for the countryside, where the long-anticipated galloping hooves finally arrive.