Mr. Krabs did not actually die in any SpongeBob SquarePants episode. However, there is a viral document titled "The Trial of SpongeBob SquarePants" that describes a crime scene where Mr. Krabs is found dead inside the Krusty Krab restaurant with his throat cut. The document suggests that SpongeBob, Plankton, and Squidward are potential suspects. However, it is important to note that this document is not an official part of the SpongeBob SquarePants franchise and is not considered canon. Therefore, it is safe to say that Mr. Krabs did not die in SpongeBob SquarePants, and any rumors or speculation about his death are not based on official episodes or storylines.