The Evil Dead 2: Dead by Dawn is the sequel to a film which used a prototype to build the interest of investors which was called what?
Evil Dead II: Evil Dead II (also known in publicity materials as Evil Dead 2: Dead by Dawn) is a 1987 American horror comedy film directed by Sam Raimi and a parody sequel to the 1981 horror film "The Evil Dead". The Evil Dead:  Raimi and the cast produced the short film "Within the Woods" as a "prototype" to build the interest of potential investors, which secured Raimi US$90,000 to produce "The Evil Dead".
"Within the Woods"