Nonstop Trouble with the Family
Didi und die Rache der Enterbten (original)
A series of murders eliminates the poverty-stricken heirs to a 10 million-dollar fortune while Didi Dodel, the unsuspecting main heir, blithely escapes the attempts on his life. After a wealthy miser dies and leaves his fortune to Didi and five others, the five each hit upon the idea of eliminating Didi from the list (Didi does not know he has been named), but they do not realize how fate can step in and alter the best and worst of intentions.
Starring Dieter Hallervorden, Wolfgang Kieling, Gerhard Wollner, Christoph Hofrichter, Gert Burkard, Harald Effenberg, Gert Haucke, Inge Wolffberg, Margit Geissler, Herbert Weißbach
It's a comedy movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.