Apparently this was the first "official" theatrical release in 3-D; without the glasses, pretty much the only eye-catching composition / depth of field comes at the very start, in the opening credits. Lots of uninteresting conversations serve as filler between the infrequent but reasonably well-done attack scenes - considering the era and the amount of blood that could (not) be shown (there is also some blatant use of stock footage). Second-billed Barbara Britton appears after half the movie is over but looks good, especially with sweat covering her neck. ** out of 4.