A Ruby Beam of Light (2016) is the first volume of Tom DeMarco's Dark World Chronicles series, followed by airship-nation. The premise is "gentle apocalyptic" — a mysterious disturbance in Earth's magnetic field inhibits all explosions, effectively repealing the technological foundations of the twentieth and twenty-first centuries.
The series represents DeMarco's most ambitious fiction project and continues the parallel literary career that began with dark-harbor-house.