La casa con la scala nel buio
When the lights go out, the knife goes in.
A Blade in the Dark (Italian: La casa con la scala nel buio) is a 1983 Italian giallo film directed by Lamberto Bava.
Watch the Trailer!
A killer stalks a composer staying at a posh Tuscany villa while writing the score to a horror film which has an incriminating clue to the killer's identity.