 Now the House Speaker Mike Johnson says that that chamber will investigate the assassination attempt. That he anticipates Secret Service agents and members of the FBI will appear for a hearing as soon as possible. Actress Shannon Doherty is dead at the age of 53. Doherty known for her roles in Beverly Hills 90210 and Charmed. Her publicist confirms her death to People Magazine saying she lost her battle with cancer Saturday after fighting the disease for many years.