The Slime People

He later encounters other survivors, including a Marine separated from his unit, and a scientist and his two daughters, and the group try their best to halt the further invasion of the slime people who are attempting to use the fog to not only isolate the city but also to lower the surface temperature enough to let them function at all hours of the day.

They also realize the reason the plane from the beginning of the film was able to land was due to the chemical making the fog reacting with the salt from the ocean water thus preventing the section near the sea from solidifying.

With the machine destroyed, the fog quickly disperses allowing the military to enter the city and causing the slime people to die off from the rapid rise in temperature.

Joseph F. Robertson recalled that the filmmakers originally intended to feature dwarves as giant voles, who would serve as the advance guard of the invasion, but the sequence was so bad it was cut from the released film.

[9] On his website Fantastic Movie Musings and Ramblings, Dave Sindelar criticized the film's inconsistent tone, repetitive soundtrack, and lack of visibility due to the overabundance of fog.

"[13] Reviewing VCI Video's release of the film, Glenn Erickson from DVD Talk called it "a prime example of a no-budget monster show hoping to find a place on a drive-in double bill".

Drive-in advertisement from 1963 for The Slime People and co-feature, The Crawling Hand .