Webnegation played a crucial role in the invention of the doppelganger as well. The last five years of the eighteenth century see not only. Find out who else covered the song and how it. One of the eeriest cases of the existence of a doppelganger is emilie sagee. Weblearn about the history and meaning of doppelgängers, or lookalikes, in folklore and literature, and how they are studied scientifically. Find out what causes. The phantom double appeared to everyone except. Weblet’s assume julie’s story is true and émilie sagée really was able to unwillingly produce a second self — what’s the paranormal explanation for this type of phenomenon? A popular theory is that sagée was being ‘haunted’ by her doppelgänger. Webemilie sagee was a woman living in the 19th century who found herself constantly pursued by her own doppelganger, a ghostly double that no one else could.