‘City of Lost Souls” is the #5 book in The Mortal Instruments series, an urban fantasy Adventure Novel set in New York written by Cassandra Clare. The Mortal Instruments Series City of Bones – Book #1 City of Ashes – Book #2 City of Glass – Book #3 City of Fallen Angels – Book #4. City of Lost Souls – Book #5. City of Heavenly Fire – Book #6 App Feature: Can read this book Offline. No internet required. Easy Navigation between Chapters (Left/Right Tap). Adjust font size. Customised Background. Side/Swipe Menu. Full Screen Mode. Easy share App. Easy controls to navigate.