The Gary Francis Poste meme gained traction in October 2021 when a group of investigators called The Case Breakers alleged they had solved the Zodiac Killer mystery. The meme typically features the side-by-side comparison of Poste’s photos with the famous 1969 police sketch, highlighting forehead scars that supposedly link the two. It quickly became a staple in the true crime community and across social media platforms like Twitter and Reddit. Users employ this template to joke about internet sleuthing, dramatic reveals, or the irony of a decades-long mystery finally being 'solved' by facial wrinkles and scars.