Kid inventors Nick and Tesla Holt have outsmarted crooks, spies, and kidnappers. Now they have to crack their biggest mystery yet: Where the heck are their pare

Nick and Tesla are bright 11-year-old siblings with a knack for science, electronics, and getting into trouble. When their parents mysteriously vanish, they’r

After foiling a gang of kidnappers and fending off an army of robots, 11-year-old siblings Nick and Tesla Holt could use a little rest! But as their third myste

Complete with romance, action, comedy, and an army of shambling corpses, this prequel to the hit mash-up novel will have Jane Austen rolling in her grave—or c

Nick and Tesla return in an all-new, robot-filled adventure! When a rash of robberies hits the town of Half Moon Bay, 11-year-old sleuths Nick and Tesla are det