This episode about the mysterious doppelganger, took some research. I couldn't have done it alone, so here are this episode's sources of knowledge;
www.gods-and-monsters.com/list-of-mythical-creatures.html
https://www.merriam-webster.com/dictionary/doppelganger
https://www.atlasobscura.com/articles/history-doppelganger
https://www.britannica.com/art/doppelganger
https://www.ancient-origins.net/myths-legends/doppelgangers-and-mythology-spirit-doubles-001825
https://listverse.com/2013/08/30/10-disturbing-tales-of-doppelgangers/
https://sasquatchchronicles.com/doppelgangers-and-the-strange-case-of-emilie-sagee/
https://en.m.wikipedia.org/wiki/Jean_Paul
https://www.thoughtco.com/true-stories-of-doppelgangers-2593448

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