A strange dance theater production about a homicidal maniac wearing an owl mask is preyed upon by a homicidal maniac wearing an owl mask. Art imitates life? Slow moving, cheap Giallo/slasher flick from Italy (of course who else makes Giallo flicks) really picks up near the end when the killer finally gets around to offing the rest of the cast. Also the killer just looks really awesome with the owl head mask.
Surprisingly I found the movie in its entirety on youtube.