LET THE RIGHT ONE IN

New word:  Emaul
As in, "I received another emaul from your mother about missing the Bris." or

"Don't delete those psycho emauls from the contractor, because I might need to show them to an attorney." Also a verb; to emaul, emauled.

Mythic referent:  Eris, the Greek Goddess of Strife, tossing the Apple of Discord into the wedding of Peleus and Thetis.

Specific Halloween referent: The erroneous assumption that, on most days of the year, the Gates of Hell are a one-way portal.