In 2008, she oversaw the case of private investigator Anthony Pellicano. Fischer sentenced Pellicano to 15 years in prison for running an illegal wiretapping operation, wiretapping billionaire Kirk Kerkorian's former wife.[5] The sentence significantly exceeded the five-year, 10-month term recommended by probation officials.[5]
In 2023 the criminal securities fraud case of Terren Peizer, the CEO and chairman of publicly traded healthcare company Ontrak, was assigned to Fischer.[6][7] After Peizer was charged with insider trading by the SEC, which alleged that he sold $20 million of Ontrak stock while he was in possession of material nonpublic negative information related to the company’s largest customer,[8][9] the U.S. Department of Justice announced criminal charges of securities fraud against Peizer, charging that thereby he had avoided $12 million in losses.[7][10][5][11][8] If convicted, Peizer could face up to 65 years in prison.[12]