The movie seems to be dubbed.
The move was made in 1984 and it's likely to make a few showings on TV in the early 1990's.
One reviewer also describes the movie as:
Schatjes starts blackly comic and veers into action-thriller territory and finally ends up with a horror sequence, homaging Kubrick's The Shining.
http://www.imdb.com/title/tt0088050/I do believe it's worth looking into... :)
It also looks like WB [Warner Home Video] has released the movie on VHS so my gut is telling my this is the movie your looking for...