A night at the museum turns into a nightmare of historic proportions! Archie and Jughead are taking their Adventure Scout troupe on a trip to the Riverdale Museum -- where an anonymous donor has gifted the museum with two Egyptian Sarcophagi (or is it Sarcophaguses?) But what's hidden inside is sure to surprise everyone! Find out what happens in "Mummy Mayhem!" the spook-tastic NEW lead story kicking off this JUMBO Comics Digest!