 After conducting a number of investigations into bogus charities and fraud for the network, Mattes became the chief investigative reporter for the TV station WAMI-TV in Miami.His investigations included uncovering a multimillion-dollar kickback scheme at Miami International Airport, legal loan sharking in the auto title loan business, and financial ties between a local mayor and organized crime.From there, Mattes traveled across the country to become an investigative reporter for the nationally syndicated Uncovered TV in Los Angeles.