Below is the complete list of Cassandra Clare’s Infernal Devices books in order. For this series, the chronological reading order is the same as the order of publication.
Publication Order of The Infernal Devices Trilogy Books
Publication Order of The Infernal Devices: Manga Books
About The Infernal Devices
Cassandra Clare’s The Infernal Devices is a Victorian-era fantasy trilogy set within the larger Shadowhunter Chronicles, but it has its own atmosphere, emotional shape, and central cast. Beginning with Clockwork Angel, the series moves the Shadowhunter world away from modern New York and into nineteenth-century London, where gaslit streets, old houses, mechanical inventions, demon magic, and rigid social expectations create a darker, more Gothic backdrop. It is both a prequel to The Mortal Instruments and one of the most important emotional foundations for Clare’s wider universe.
The trilogy follows Tessa Gray, an American teenager who arrives in London expecting to find her brother, only to discover that she has a rare and dangerous supernatural ability. Tessa is not a Shadowhunter, warlock, vampire, or ordinary human in any simple sense, and the mystery of what she is becomes one of the trilogy’s main engines. Her connection to the London Institute brings her into the lives of Will Herondale, Jem Carstairs, Charlotte Branwell, Henry Branwell, Jessamine Lovelace, and other figures whose family lines and choices echo far into later Shadowhunter books.
The emotional center of The Infernal Devices is the relationship among Tessa, Will, and Jem. Clare uses the triangle not as a shallow device, but as a study of love shaped by loyalty, mortality, self-denial, and impossible timing. Will is brilliant, reckless, cutting, and burdened by a secret that has warped the way he treats everyone around him. Jem is gentle, perceptive, and terminally fragile because of his dependence on yin fen, a demon drug forced into his life before the series begins. Tessa’s bond with both of them gives the trilogy its unusual tenderness: the story is as much about devotion between friends as it is about romance.
The Infernal Devices also deepens the idea of parabatai, the sacred warrior bond between Shadowhunters. Will and Jem’s connection is one of the most defining relationships in Clare’s work, and it gives the trilogy much of its moral weight. Their bond complicates every romantic and personal choice because love is never treated as a simple matter of desire. Duty, friendship, sacrifice, and the fear of causing pain all matter. That makes the trilogy more emotionally restrained and tragic in tone than some of the contemporary Shadowhunter books, even when it is full of action and supernatural danger.
The main external conflict centers on Mortmain, the Magister, and his army of clockwork creatures. His campaign against the Shadowhunters ties the series to questions of revenge, invention, exploitation, and the abuse of people treated as tools. The mechanical threat fits the Victorian setting especially well, giving the trilogy a steampunk edge while still keeping demons, runes, and angelic law at the center of the mythology.
Although The Infernal Devices can be read before or after The Mortal Instruments, its strongest effect comes from understanding it as both a complete trilogy and a cornerstone of the larger Shadowhunter timeline. It explains major family histories, introduces relationships whose consequences last for generations, and gives emotional depth to names that later become legendary. More than anything, it shows Clare at her most romantic and elegiac, using fantasy adventure to explore how love can endure through time, loss, memory, and sacrifice.