2018’s They Promised Me The Gun Wasn’t Loaded is the second novel in James Alan Gardner’s The Dark and the Spark1 series. It is a sequel to 2017’s All Those Explosions Were Someone Else’s Fault.
University of Waterloo students Jools, K2, Miranda, and Shar were victims of a classic Mad Scientist’s lab accident, which, far from killing them, imbued them all with Light-derived superhuman abilities. Each so-called Spark gained a different set of powers; each adopted a different code-name to reflect their new identities (Ninety-Nine, Zircon, Aria, and Dakini). All of them were drafted into the on-going struggle between the Darklings (the one percent who control society) and the Light.
The Light opposes the vampires, demons, wraiths, and other Darklings. That doesn’t mean the Light is good, as Jools/Ninety-Nine is painfully aware.