Jason's mask and machete from the Friday the 13th movie series.Photo by Tom Magliery Horror films are big business. Shudder and Screambox are streaming monster movies 24 hours a day.

Today is Friday the 13th, a day that's been considered cursed long before the first "Friday the 13th" movie unspooled on screens 45 years ago. But the franchise’s boogeyman killer Jason, with ...