Along with the Nancy Drew series, almost all of the thrillers in the popular teenage franchise were produced by ghostwriters, thanks to a business model that proved to be prescient.
In the opening pages of a recent installment of the children’s book series The Hardy Boys, black smoke drifts though the ruined suburb of Bayport. The town's residents, dressed in tatters and smeared with ash, stumble past the local pharmacy and diner. Shards of glass litter the sidewalk. “Unreal,” says the mystery-solving teenager Joe Hardy—and he's right. Joe and his brother Frank are on a film set, and the people staggering through the scene are actors dressed as zombies. But as is always the case with Hardy Boys books, something still isn’t quite right: This time, malfunctioning sets nearly kill several actors, and the brothers find themselves in the middle of yet another mystery.