Standard fare, by-the-numbers, on cue,
Neither terror nor mummy were new
With a dried up old plot
They relied on a lot,
So that Kharis had something to do.
It seems that every Mummy sequel made by Universal had essentially the same plot. The Mummy's Ghost (Reginald Le Borg, 1944) starred Lon Chaney as the jealous mummy Kharis (when it wasn't a stunt double), Ramsay Ames as his repeatedly reincarnated princess, and John Carradine as the high priest that always falls for her.