Cautiously he neutralized the control lever. The cage came to rest an inch above the floor. As far as Dan could tell, he hadn't traveled so much as a minute into the past or future.
He looked over the controls. There should be one labeled "Forward" and another labeled "Back", but all the levers were plain, unadorned black. They looked, Dan decided, like ordinary circuit-breaker type knife-switches. In fact, the whole apparatus had the appearance of something thrown together hastily from common materials. Still, it worked. So far he had only found the controls for maneuvering in the usual three dimensions, but the time switch was bound to be here somewhere....
Dan looked up at a movement at the far end of the hall.
A girl's head and shoulders appeared, coming up a spiral staircase. In another second she would see him, and give the alarm—and Dan needed a few moments of peace and quiet in which to figure out the controls. He moved a lever. The cage drifted smoothly sideways, sliced through the wall with a flurry of vivid blue light. Dan pushed the lever back. He was in a bedroom now, a wide chamber with flouncy curtains, a four-poster under a flowered canopy, a dressing table—
The door opened and the girl stepped into the room. She was young. Not over eighteen, Dan thought—as nearly as he could tell with the blue light playing around her face. She had long hair tied with a ribbon, and long legs, neatly curved. She wore shorts and carried a tennis racquet in her left hand and an apple in her right. Her back to Dan and the cage, she tossed the racquet on a table, took a bite of the apple, and began briskly unbuttoning her shirt.
Dan tried moving a lever. The cage edged toward the girl. Another; he rose gently. The girl tossed the shirt onto a chair and undid the zipper down the side of the shorts. Another lever; the cage shot toward the outer wall as the girl reached behind her back....
Dan blinked at the flash of blue and looked down. He was hovering twenty feet above a clipped lawn.
He looked at the levers. Wasn't it the first one in line that moved the cage ahead? He tried it, shot forward ten feet. Below, a man stepped out on the terrace, lit a cigarette, paused, started to turn his face up—
Dan jabbed at a lever. The cage shot back through the wall. He was in a plain room with a depression in the floor, a wide window with a planter filled with glowing blue plants—
The door opened. Even blue, the girl looked graceful as a deer as she took a last bite of the apple and stepped into the ten-foot-square sunken tub. Dan held his breath. The girl tossed the apple core aside, seemed to suddenly become aware of eyes on her, whirled—