Like shadows they flitted across the open space, and approached the airship, gaining the sides of the vessel, they thought, without being observed. Here they paused and Epworth placed his hand on the steel ladder-steps, and glanced around. He was startled at the clearness of the light. Men on guard would have had little trouble seeing them come across the open space. He shuddered. It would be easy for Toplinsky to prepare an ambush for him; and as easy for him to keep an eye on the cave.

From where he stood he could readily make out the mouth of their hiding place.

“Thank goodness,” he murmured, “he doesn’t know where we are hiding.”

He looked up at the deck of the plane. It was entirely too still—suspiciously quiet. If he was preparing to receive an enemy in secret he would maintain just such a stillness. He would lead his victim on.

Nevertheless, it was board the Aerolite or starve.

With a cat-like step he climbed the ladder, gun in hand, his knife in his mouth. At the balcony there was a dark shadow. Instantly he covered it with his gun.

“Not a whimper!” he commanded in a low voice.

“Sh—h.” It was Michael Strauss, and he put up his gun. “Toplinsky is expecting you just inside of the door,” Michael continued. “I let myself down from the balcony on top of the airship when I saw you coming. He has purposely left the door open in the hope that you will push it, and walk in.”

“We must have food,” Epworth stated tersely. “Also water.”

“Slip back down the ladder, and go around to the rear of the ship. I also have been waiting for you, and have dropped several days’ supplies on the ground. Take this, and come back the day after tomorrow, when the coast is clear. By that time Toplinsky will think that you have discovered other means of getting food. Then you can keep coming back until you are well supplied. Fortunately Toplinsky has not yet discovered that I aided you when you were on board.”