Another scientist in the area, Dr. Roger Fleming (Brian Howe) questions Ranger Brad (Dan Conroy) about Cadavra Cave, a site rumored to contain a "Lost Skeleton".

Kro-Bar (Andrew Parks) and Lattis (Susan McConnell) are from the planet Marva and are now stranded on Earth, in need of the element atmosphereum to repair their powerless ship.

Using a device called the "transmutatron," they disguise themselves as "Earth people" and clumsily manage to talk their way into the cabin, having been mistaken for the property owners.

The evil scientist tricks the pair, however, and the Skeleton uses his mind powers to freeze the aliens in their tracks once Dr. Fleming has the meteorite.

[3] Acquired by Sony Pictures' Michael Schlesinger after a screening at the American Cinematheque in Hollywood, the film was released in theaters in February 2004, and on DVD in June 2004.

The website's critics consensus reads, "Lost Skeleton is clever at spoofing B-movies, but the joke isn't sustainable for its running time.

[1] Roger Ebert gave the film 1-and-a-half out of 4 stars, writing that "'The Lost Skeleton of Cadavra' has been made by people who are trying to be bad, which by definition reveals that they are playing beneath their ability".

Club wrote that "Once the initial joke wears off, Skeleton is a dull slog that even the miracle process of 'Skeletorama' can't set right".

[7] Dennis Harvey of Variety wrote that the film "takes true trash cinema devotion to satirize the clunky visuals, banal dialogue, logic gaps and pseudoscientific silliness of a bygone era’s schlockiest obscurities quite so accurately, complete with one-beat-tardy editorial rhythms".

[3] Ed Gonzales and Jeremiah Kipp, writing for Slant Magazine, said that the "perilously low budget plays to Lost Skeleton's advantage, and the scant 90-minute running time assures that it doesn’t wear out its welcome".

[8] A sequel, The Lost Skeleton Returns Again, was filmed in March 2008, again written and directed by Blamire, produced by Mark Allen Stuart, and featuring virtually all of the original cast (though three actors whose characters were killed in the original are back in different roles), as well as several actors who appeared in Blamire's subsequent Trail of the Screaming Forehead.

However, unlike the first film, it does not repeat the "ultra-cheap independent" feel, but is intended to look more like a studio B-picture from the same era, such as those produced by Sam Katzman or Edward Small.

In November 2012, a Dread Central article by Sean Decker announced that Blamire was teaming with famed monster-maker Cleve Hall to make the picture in 2013, but it was delayed by a book project.