Alex Segura’s Secret Identity is a mesmerizing journey into the subculture of comic books in 1970s New York City, where a woman named Carmen Valdez is struggling to put her stamp on a superhero of her own, and finally gets a chance with “The Lethal Lynx.” Things take a dark turn when the project is turned in to the publisher without Carmen’s name attached and the supposed creator turns up dead. Segura’s passion for comics and the creative spirit shines through in this dynamic, character-driven mystery, an ingeniously plotted crime novel with a fresh perspective on cultural history.