Friday the 13th one occurrence each. A Friday the 13th occurs during any month that begins on a Sunday. The fear of the number 13 has been given a scientific name: "triskaidekaphobia"; and on analogy to this the fear of Friday the 13th is called "paraskevidekatriaphobia", from the Greek words "Paraskeví" (Παρασκευή, meaning "Friday"), and "dekatreís" (δεκατρείς, meaning "thirteen"). The superstition surrounding this day may have arisen in the Middle Ages, "originating from the story of Jesus' last supper and crucifixion" in which there were 13 individuals present in the Upper Room on the 13th of Nisan Maundy Thursday, the night before his
Friday the 13th (franchise) who had discovered the "Necronomicon". There have been two books released chronicling the making of the "Friday the 13th" films. In February 2005, FAB Press published their book containing interviews with the cast and crew of the "Friday the 13th" series of films. David Grove, a film journalist who has written for "Fangoria", "Cinefantastique", and various other British magazines detailing the creation of the "Friday the 13th" films, wrote the comprehensive book, "Making Friday the 13th: The Legend of Camp Blood". Grove interviewed over 100 "key personnel involved in making the films" to collect "detailed production histories of each of