Maximum Warp Book One: Dead Zone (Star Trek The Next Generation, No 62)

As an unknown force disrupts subspace throughout the galaxy, creating dead zones in which advanced technology will not function and threatening to plunge the Alpha Quadrant into a dark age, the uneasy alliance between the Federation and the Romulans becomes strained while Picard and Spock join forces with a Romulan war criminal to find the source of the disruption. Original.