uBiome raised millions of dollars in venture funding with the promise that insurance companies would pay for its customers' microbiome tests. But that pursuit ultimately led to an FBI raid and a federal indictment alleging a fraud scheme. WSJ's Amy Dockser Marcus tells the story of uBiome's spectacular downfall. Plus, we try to track down uBiome's leaders, Jessica Richman and Zac Apte, who the government says are fugitives.