viously he was safer here at the base
of the cliff, but a voice seemed to be calling, a friendly voice from
the hilltop.

* * * * *

He rose on aching legs and forged ahead. Every fiber of his being cried
out in protest, but resolutely he placed one foot ahead of the other,
walking mechanically.

Opposite the hill he disregarded the strange call that pulsed down upon
him, long enough to rest his tortured body. He must build up his
strength for the climb.

He realized that danger lay ahead. Once he quitted the blackness of the
cliff's base, Ouglat, even in the darkness that lay over the land, might
see him. That would be disastrous. Once over the top of the hill he
would be safe.

Suddenly the landscape was bathed in light, a soft green radiance. One
moment it had been pitch dark, the next it was light, as if a giant
search-light had been snapped on.

In terror, Mal Shaff looked for the source of the light. Just above the
horizon hung a great green orb, which moved up the ladder of the sky
even as he watched.

A moon! A huge green satellite hurtling swiftly around this cursed
world!

A great, overwhelming fear sat upon Mal Shaff and with a high, shrill
scream of anger he raced forward, forgetful of aching body and outraged
lungs.

His scream was answered from far off, and out of the shadows of the
cliffs toward the far end of the moor a black figure hurled itself.
Ouglat was on the trail!

Mal Shaff tore madly up the slope, topped the crest, and threw himself
flat on the ground, almost exhausted.

* * * * *

A queer feeling stole over him, a queer feeling of well-being. New
strength was flowing into him, the old thrill of battle was pounding
through his blood once more.

Not only were queer things happening to his body, but also to his brain.
The world about him looked queer, held a sort of an intangible mystery
he could not understand. A half question formed in the back of his
brain. Who and what was he? Queer thoughts to be thinking! He was Mal
Shaff, but had he always been Mal Shaff?

He remembered a brittle column of light, creatures with bodies unlike
his body, walking into it. He had been one of those creatures. There was
something about dimensions, about different planes, a plan for one plane
to attack another!

He scrambled to his bowed legs and beat his great chest with mighty,
long-nailed hands. He flung back his head and from h