Chelah Horsdal as Betsy's Mother Sage Brocklebank as Stu Jonathon Young as Lloyd Tom McBeath as Wilson Analysis Roger Ebert pointed that when monsters in 1950s B movies terrorized small, desert towns, there were production reasons behind the trope. Production costs for hiring extras and travel expenses were lower, and dry sunny weather was almost a guarantee. Filming in the deserts of California, relatively close to Hollywood and the Los Angeles area, meant many of crew and cast could 'commute' to the locations, if need be, and spend weekends at home. The film replicates the look and feel of 1950s science fiction film, with one notable exception: the movie is in color, while in the 1950s black-and-white was the norm, again for lower cost. According to Ebert, Lana Lewis (Jody Thompson) is depicted as a "sexpot". Which recalls another feature of 1950s science fiction films. They often cast pin-up girls such as Cleo Moore and Mamie Van Doren in key roles. Ebert found the Ghota to be similar to the B.O.B from Monsters vs. Aliens (2009), which was also a tribute to 1950s films. Gary Westfahl found the unconventional romance between Urp and Tammy to reminiscent of The Day the Earth Stood Still (1951). In that film, the alien Klaatu and human secretary Helen Benson fall in love, but they too end the film physically separated. Goodwin says that the film "cherry-pick[s]" elements from The Day the Earth Stood Still (1951), It Came from Outer Space (1953) and The War of the Worlds (1953). Reception The film received mixed reviews. , it holds a 36% approval rating on aggregate review site Rotten Tomatoes, based on 67 reviews, with an average score of 4.89/10. The site's main consensus reads "An earnest attempt to parody campy 1950s sci-fi films, Alien Trespass eventually loses its charm among tedious dialogue and cheesy special effects." Film critic Roger Ebert gave the film two out of four stars and felt that the film was, "obviously a labor of love. But why? Is there a demand for cheesy 1950s sci-fi movies not met by the existing supply? Will younger audiences consider it to be merely inept, and not inept with an artistic intention? Here is a movie more suited to ComicCon or the World Science Fiction Convention than to your neighborhood multiplex". In her review for The New York Times, Jeannette Catsoulis described the film as "a