Besides having such famous people buried there as Karl Marx, Douglas Adams, and the parents of Charles Dickens, Highgate Cemetery has long been known for its ghosts, sinister activities, and other strangeness, including:
- The most famous spook in this cemetery is The Highgate Vampire, who is not really a vampire in the classic sense, but a phantom that is described as a 7-foot-tall, dark male figure with piercing, hypnotic eyes and wearing a long black coat and high top hat; he seems to vanish into thin air. There have been several dozen sightings and encounters since the late 1960s.
- A man whose car broke down near the cemetery came face to face with a ghoul with glowimg red eyes that peered at him through the graveyard's iron gates.
- The ghost of an insane old woman has been seen racing among the gravestones, her gray hair flowing behind her as she searches for her children, whom she allegedly murdered.
- A dark shrouded figure has been see standing stock still and staring into space. When it is approached, it vanishes then reappears a short distance away, still staring into the void.
- A businessman was terrified by a phantom that jumped over the fence and landed right in front of him. He described it as having pointed ears, glowing eyes, and large nose. This might have been the infamous Spring-Heeled Jack.
- The floating ghost of a nun has been seen passing over the graves.