which he then hides in and they are driven off to be loaded onto a ship headed for Wisborg. This soil is later revealed to be unhallowed earth from Orlok's own grave; according to The Book of the Vampires, Nosferatu must sleep by day in the unholy earth from their graves to sustain their power. On board the ship, he kills every crew member until only the captain and his first mate remain. Later when the first mate goes to the cargo hold to investigate, Count Orlok rises from his coffin, terrifying the first mate who jumps overboard in fear. The captain ties himself to the wheel of the ship and then Count Orlok creeps up on him and kills the captain. His journey by sea spreads plague throughout Europe. Upon his arrival in Wisborg, Orlok infests the city with rats that sleep in his coffins, and countless people fall victim to the plague, forcing the local authorities to declare a quarantine and provoking hysteria among the citizens. Rather than come back as vampires, however, his victims simply die. Ellen and Hutter know the causes of the plague but fear they are powerless to stop the vampire. Ellen watches sullenly as lines of coffins are carried through the empty streets, and she realises Orlok must be stopped. Ellen learns from The Book of the Vampires that – rather than a stake through the heart – the Nosferatu can only be vanquished if a woman pure in heart willingly allows him to feed off her long enough to prevent him from seeking shelter from sunrise. Ellen coaxes Orlok to her room and lies in bed whilst he drinks from her neck. The sun rises, and Orlok is burned away in a cloud of smoke. Knock is able to sense Orlok is dead. Ellen dies soon after. Legacy Orlok's name was referred to in the form of Byron Orlok, Boris Karloff's character in Peter Bogdanovich's Targets, featuring Karloff in a role as an aging horror film star. Orlok makes an appearance as an incidental antagonist in Jonathan Green's ACE gamebook Dracula: Curse of the Vampire. Orlok appears briefly at the end of the Spongebob Squarepants episode "Graveyard Shift" where the episode's main characters erroneously refer to him as Nosferatu. His appearance was regarded by many critics as a highlight of the episode and a great example of the show's nonsensical yet enjoyable