Mystery Science Theater 3000 S08 E04 The Deadly Mantis

"We've got Movie Sign!"

In the theater, the crew watches as a praying mantis is exposed to atomic radiation and attacks the North Pole in "The Deadly Mantis" (1957). Meanwhile, on Earth, Pearl, Bobo, and Dr. Peanut accidentally (with help from Mike) detonate a bomb that destroys the planet. The crew holds a memorial service for Pearl only for her to call them and vow to hunt them down across space.