The local police, growing increasingly concerned about this church, ask parishioners to take a sip of wine and then spit it back out for DNA testing. It's blood, and it matches a 1970s murder victim.

"Communion", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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The local police, growing increasingly concerned about this church, ask parishioners to take a sip of wine and then spit it back out for DNA testing. It's blood, and it matches a 1970s murder victim.