Story & Art: Mac Raboy
Original run: 1954-01-24 to 1954-05-02
Summary: Returning from Callisto (S-047 The Mind), Flash is told by a concerned Dr. Zarkov that Dale has uncharacteristically joined an archaeological expedition in Africa led by the eccentric Dr. Eric Sark.
Racing to the Libyan desert to catch up with the expedition, Flash learns that the doctor is trying to harness the powers of a mythological being who in reality is a visitor from outer space – but Dale has already succumbed to the strange force...
(Source of summary: www.ipcomics.net)
All credits go to "spax".