This is a big year for spooky events in SoCal. For the occasion, one of this year’s 10 mazes — “10 Chilling Chambers” — pays homage to mazes from the event’s history and features a host character, the Keeper, modeled after horror host Seymour: The Master of the Macabre, the star attraction of the first, large-scale Knott’s Halloween event. This …