Redstone sued Herzer and Holland in state court in California in October to claw back the millions of dollars he lavished on them, claiming they committed elder abuse.
Herzer sued Shari Redstone, her two sons and members of Redstone’s household staff for interfering with her expected inheritance in May, minutes after a probate court judge dismissed her petition to be reinstated as Redstone’s health-care agent.
Nancy Sterling, a spokeswoman for Shari Redstone, didn’t immediately respond to an e-mail seeking a response to Richards’ comments.
The case is Sumner M. Redstone v. Manuela Herzer, 159840/2016, New York State Supreme Court, New York County (Manhattan).