is eyes was imparted to
Fenwick, and the doctor suddenly nodded.

"Yes--yes, of course ... But you'll have to remain quiet, Gaddon, and be
patient a moment...."

The creature stopped its advance upon Fenwick then. And a growl rumbled
in Gaddon's animal throat.

Then Fred watched as the doctor stepped swiftly to a table with
instruments and hurriedly began to prepare a hypodermic.

"I'll give you a special extract injection to start...." Fenwick
explained as he worked.

And Trent knew that the doctor was preparing an injection that would
subdue the monster. That would enable them to call the police....

And the eyes of Gaddon watched the fingers of the surgeon prepare the
hypodermic. And for a single moment the human part of Gaddon's monster
mind relaxed its tenacious hold.

* * * * *

There was a rumble of raging thought deep within his twisted brain. It
swept up, gripped the human element, and enveloped it. A hoarse mewing
sound left the twisted lips as the mind became a single, bestial thing.

And now it thought with a viciousness. It knew now that it was finally
in control. That the full change had been completed. And it knew
suddenly what it wanted.

Its animal eyes stared at the three humans. And it felt a hatred for the
men who did not understand it. And it felt a desire for the woman who
feared it. A desire that crept out of the primeval jungles. That swept
through it to find one of its kind. And there was the vague instinct
that was Gaddon, who told it how to fulfill that desire. Gaddon, who
knew where the secret lay.

And then there was the driving urge that swept up from the animal ages.
The urge to kill, to destroy what was hated. And the eyes of the monster
fastened on the figure of Fenwick as the doctor turned from the table,
the hypodermic in his hand.

"All right, Gaddon ..."

The voice of Fenwick trailed off. And Fred Trent stared at the face of
the monster. What he saw there brought a chill to his being. And he
heard the girl gasp from the far corner of the room, as her eyes too saw
the change that had spread over the face of the creature.

For there was no longer any vestige of human recognition in that face.
There was no longer any trace of the man who had been Gaddon. There was
only the monster now. The twisted, leering lips of an animal mind.

A harsh growl left those lips then and the creature moved forward toward
the surgeon.

Trent knew what was