Mr March imprisons Rudolph Valentino and Natacha Rambova in his hotel shortly after Valentinos supposed death in 1926. In reality, Rambova lived another forty years, and remarried in the 1930s.
The little girl accomplice to the 10 commandments killer describes the cut open stomachs of some of the victims by saying "it stunk" instead of "it stank." Stunk is the past participle, whereas stank is the simple past, which was the intended tense.