Alan backed, with the two of them behind him. He had been in that room certainly not over thirty seconds. He left it with Turber's secret laid bare to him! The room had an archway, opening inward. Alan had stood facing it. Charlie had seen it and yelped with excitement.
In the inner court stood a large gray-white vehicle—a cabin airplane. A spread of canvas for a concealing roof was over it. A vehicle for traveling through Time—like the Time-traveling tower we had seen in Central Park!
CHAPTER V
THE FLIGHT IN CENTRAL PARK
Alan found himself outside the laboratory. Its door was open, with a yellow glow streaming out. Charlie, clinging to the girl, was with him. The glow fell on them; Alan shoved them aside.
"Which way, Charlie? We've got to get out of here!"
They stood in the darkness a moment against the laboratory wall. The hospital was aroused. A voice had shouted. Others were taking it up. Lights were showing in several of the windows. An uproar—growing now of its own momentum. Some one lighted a light in the reception room. A shade snapped up.
The courtyard was brightening with yellow glints of light. No one as yet seemed to notice the three figures standing by the wall.
"Which way, Charlie?" Alan was momentarily confused. They would have to pass through the lower part of the building, get into the garden, fight their way through if necessary.