Jorge Espinosa, the father of a former Miami-Dade cop who resigned after a controversial shooting, is a public adjuster awaiting trial on a massive insurance-fraud scam. But when Espinosa was jailed recently, authorities say, he plotted with a fellow inmate to try to hire a hitman to assassinate the prosecutor and star witness in his case. But the supposed plot won’t result in new charges. After the inmate told prosecutors, an undercover investigation fizzled. The allegations were concerning enough, however, that the Miami-Dade State Attorney’s Office on Friday will ask a judge to keep Espinosa, 62, behind bars before his trial.