''The Mummy's Tomb'' picks up the story of Kharis thirty years after the conclusion of ''The Mummy's Hand''. One evening in the fictional town of his Mapleton, Massachusetts, Steve Banning (Dick Foran) recounts the story of Kharis to his family and evening guests in his home (flashback footage from ''The Mummy's Hand'' appears as Banning tells his tale). As he concludes his narrative of the successful destruction of the creature, the scene switches back to the tombs of Egypt. Surviving their supposed demise, Andoheb (George Zucco) explains the legend of Kharis (Lon Chaney, Jr.) to his follower, Mehemet Bey (Turhan Bey). After passing on the instructions for the use of the tana leaves, and assigning the task of terminating the remaining members of the Banning expedition and their descendants, Andoheb expires. Bey and Kharis leave Egypt for the journey to the United States.