- ? [as Frank Riddell]
- Kaänga; Ann Mason; Awassis (African tribe); Halaam; N'geeso; Mouga (giant ape)
- Kaänga and Ann are taken prisoner by an Arab slaver who is using his slaves to excavate an ancient Egyptian temple, hoping to find treasure. The treasure is found, but the Arab is killed by his ape guard.
- ancient Egyptian temples; giant apes; human skeletons; Juju Mountain; slavers; stereotyping of Arabs; treasure chests; whips
The story title is taken from the cover blurb.
first line: "From the Valley of Grinning Skulls, surge cold-blooded fiends to wreak terror and disaster."
The art includes many swipes.