Elvira star Cassandra Peterson returns to Knott's Scary Farm for "Yours Cruelly Elvira XXperience," featuring her 20-year history at the Halloween event.

Elvira star Cassandra Peterson returns to Knott's Scary Farm for "Yours Cruelly Elvira XXperience," showcasing footage and clips from her 20-year history at the Halloween event. Knott's Scary Farm will feature over 1,000 monsters, mazes, and scare zones from September 19 to October 31. Peterson won't be making personal appearances, but the event will include signing events and panel discussions.