When a rich man dies, some items from a collection of his are stolen- an ancient Egyptian gold amulet and the mummy that was wearing it. The police consult scholars from the local University to help with the investigation, which is taking a more serious turn as people connected with the case are killed by wounds that seem to be from a housecat.

Two ghosts, who were mistakenly branded as traitors during the Revolutionary War, return to 20th century New England to retrieve a letter from George Washington which would prove their innocence.