Purposely released on Friday, January 13 because the Tales From The Crypt movies were originally to be tied with traditional "horror weekends" such as Friday the 13th or Halloween.
Billy Zane's personal favorite film/performance of his own.
"Demon Knight" was a script that had been circulating in Hollywood for a number of years. Although it wasn't adapted from E.C. Comics and lacked the standard morality play, the producers decided it had the right mixture of horror and humor to be produced as a Tales from the Crypt (1989) spin-off movie.
Birds had nested in the rafters of the set, which caused audio problems, so before each take the crew would shoot off a blank gunshot to startle and quiet the animals.
The green slime was taken from Glowsticks which the FX crew disassembled.