Synthetic Men of Mars
THE UNHOLY LEGION…
John Carter desperately needed the aid of Barsoom’s greatest scientist. But Ras Thavas was the prisoner of a nightmare army of his own creation, half-humans who lived only for conquest. And in their hidden laboratory seethed a horror that could engulf all Mars.
THE THING IN VAT 4… The sight that met my eyes was one of the most horrible I have ever looked upon. Something had evidently gone wrong with the culture medium, and instead of individual synthetic men being formed, there was a single huge mass of animal tissue emerging from the vat and rolling out over the floor. Human parts and organs grew out of it, a leg here, a hand there, a head somewhere else: and the heads were mouthing and screaming. It could go on growing until it engulfed the building, the city… and perhaps all of Barsoom …. unless it were destroyed. And I knew of no way to Synthetic Men of Mars destroy it.