Clockwork Angel

There are three books in the Infernal Devices series: Clockwork Angel, Clockwork Prince, and Clockwork Princess. The Infernal Devices are often called a prequel series to the Mortal Instruments, but only because they take place in an earlier time period and contain some of the Mortal Instruments’ characters’ ancestors. You don’t have to read the Mortal Instruments before The Infernal Devices. You don’t have to read the The Infernal Devices before The Mortal Instruments. You can read them in any order.