Description:

Hex
From the moment Miles Billings arrived in a little town near Salem Corners called Witches’ Hollow, Hannah the witch began her reign of terror. While innocent people were being “hexed” and reduced to mumbling nonsense, The Man of Bronze went into action, risking his own life and those of his bold allies. Doc Savage plunged into nightmare horrors to subdue the most terrifying Master of Crime alive.
Authored by William G. Bogart & Lester Dent.

The Running Skeleton
Doc Savage and his crew are suddenly guinea pigs in an experiment of terror -- and a fiendish gang of gun slinging skeletons are out to skin them alive.
Authored by Lester Dent.