Capillaria philippinensis is a mysterious parasite and intestinal capillariasis is a mysteriousdisease. It is now more than half a century since the discovery of the first case in Philippineswithout answering many questions concerning the parasite's taxonomy, morphology, lifecycle, diagnosis, pathology, clinical symptoms, mode of transmission as well as how it wastransported to Egypt and how it started to spread and progressed in most EgyptianGovernorates; particularly those of Middle Egypt. This article is a trial to overview all theseaspects of the parasite.