Skeleton Man is a 2004 Sci Fi Pictures original film.
In this movie, the titular Skeleton Man stalks a squad of soldiers.
Among these items is the skull of an Indian chief, Skeleton Man appears through a portal and kills the archaeologist.
Skeleton Man then chases the archaeologist's assistant to a power plant, killing her and the two men working there.
Skeleton Man, now on horseback, kills a soldier and chases his partner.
As the film's credits begin to roll, they suddenly reverse and show Skeleton Man back on his horse in the woods, thus indicating that he has survived.
They marry at the conclusion of Skeleton Man.
Skeleton Men of Jupiter, the second story in this book, offers no such problem as does Giant of Mars.
Still, Skeleton Men is a complete adventure story, and an excellent one.
The Foreword of Skeleton Men of Jupiter, by the way, is published here for the first time.