I actually just finished watching this oddball, erratically edited slasher film that was recently released by Code Red (it previously floated around on video as Death Merchant in some quarters). Joe Spinell stars as a murderous undertaker with unhealthy designs on his recently departed female customers. There's lots of sweat, lots of aerobics, and lots of stock footage from The Corpse Vanishes (and The Terror, and Africa Screams, and Scared to Death, and ... Bedtime for Bonzo).
There's not really a trailer available, but I did find this promo reel (there's an introduction by a guy named Beck who provides some background). It's long, a little disgusting in places, and interestingly enough includes some sequences that are missing from the Code Red DVD.
Spinell died just a few months after completing the film.
The Dead Next Door is a blog about regional or "backyard" horror and science fiction films made from the late 1950s to the earlyl 1990s (and beyond). These films were released during the peak years of independent film production, created by a motley crew of seasoned pros, gifted amateurs, and enthusiastic genre fans, along with dozens of eccentric dreamers -- doctors, lawyers, insurance salesmen, publishers, commercial filmmakers, TV production crews and moonlighting pornographers -- all looking for their big break or a fast buck or both.