You can read along here at the Chilling Tales for Dark Nights site. The story begins:
I’m sending this email to warn you it is in the coffee. I knew something was wrong when I took the first sip. There was something spicy about it.
Oh, no! It's too late! I've already had my coffee!
Perhaps the folks participating in Bleubeard and Elizabeth's T(ea) gathering are staying away from coffee and will be safe. Check on them just to make sure.