Green Goblin gets his point across to Hammerhead.

For "The Spectacular Spider-Man," Halloween arrives early this year - in the all-new Saturday, May 10 episode - but it still comes with all the traditional goodies, including a goblin, lots of spiders, a very large tombstone and even a black cat.

"The Uncertainty Principle," this Saturday's premiering episode at 10:00 a.m. ET/PT on Kids' WB!/The CW, presents a number of perplexing situations for Peter Parker and Spider-Man as they both try to find clarity amid the masks, mysteries and menace of Halloween. While Colonel John Jameson struggles to land his damaged space shuttle, Spider-Man continues his ongoing battle with Green Goblin, who also threatens Hammerhead and Tombstone. Still, Peter's greatest challenge will be facing the awful truth when he finally learns the Goblin's "true" identity.

Peter Parker's Halloween Festival dance card is overflowing as he's surrounded by (from left) Mary Jane, Liz and Gwen.

"The Uncertainty Principle" is written by Kevin Hopps and directed by David Bullock. The episode will follow a repeat airing at 9:30 a.m. ET/PT of the episode "Catalysts," which features villains Green Goblin and Tombstone.

Spider-Man relaxes above the Halloween festivities in his own webbed hammock.