 According to star Marshall Thompson (I) (qv), when director  Arthur Crabtree (qv) showed up on the first day of shooting and  looked at the script, he claimed that this was not the film he had  been hired to direct, and that he did not do "monster" films.  Crabtree got into such a heated argument with the producers that he  left the set and did not show up for several days, during which time  Thompson himself directed the film.