Sekret Machines: Book 2 – A Fire Within is a science-fiction thriller novel based on actual events, created by Tom DeLonge, American musician, co-lead vocalist/guitarist of Blink-182 and Angels & Airwaves and British-American novelist A. J. Hartley. The first edition was released through DeLonge's To the Stars company on September 18, 2018. It's the second novel in the fictional Sekret Machines series following 2016's Sekret Machines: Book 1 – Chasing Shadows, and third book in the broader franchise following 2017's non-fiction novel Sekret Machines: Gods. Source: Wikipedia (en)