Abbott and Costello Meet the Mummy is the last of the team's vehicles for Universal-International. Stranded in Egypt, Bud and Lou hire themselves out as travelling companions to archeologist Kurt Katch. Before long, Katch is murdered by a group of cultists, and a medallion, embossed with a map which leads to a sacred burial site, is accidentally swallowed by Costello. The boys become the unwilling pawns of the cultists, led by Richard Deacon, and a greedy adventuress, played by Marie Windsor. The last scene finds Costello being menaced by three mummies, two of them bogus.
~ Hal Erickson, All Movie Guide