C AUTIOUSLY A NNJA WIGGLED forward. As her weight came off the hidden floor plate the spears began to retract into the walls. By the time she reached her lantern they had vanished. The stone plates that covered the ports through which the spears had thrust out swung back into place.

      Coughing on the dust she had stirred up doing her snake act, Annja sat up and shone her light on the walls. She could see no sign of where the spears had come from. The walls had been painted with some kind of murals, perhaps once quite colorful. They had faded to mere swirls and suggestions of faint color. They worked to camouflage the trap, though.

      She shook her head and picked herself up. “Got to move,” she told herself softly as she dusted off the front of her tan shirt and khaki cargo pants. This would be her only shot. With the construction of a giant dam nearby, the floodwaters were rising. By tomorrow they would make the subterranean tunnels unsafe.

      With redoubled caution she made her way deeper into the lost emperor’s tomb.

      The corridor walls were hewed from a yellow limestone. Tests showed it had been quarried in some hills several miles away. The passageway air was cool and dry. It smelled of stone and earth.

      Some indeterminate distance down, as Annja began to feel the weight, not just of years, but of millions of tons of earth pressing upon her, the corridor leveled. It had taken several bends and a couple of doglegs, and had plateaued briefly, as well. Annja wasn’t sure whether the zigs and zags had some ritual significance, were meant to additionally befuddle an interloper or were simply to prevent a cart full of spoil from running all the way back down to the bottom during the digging of the corridor. She suspected it was all of the above.

      Far down the hallway, in which she could just stand upright, Annja saw that something was blocking the way. Could that be the door to Lu’s actual tomb? she wondered. Her heart beat quickened. According to the ground-penetrating radar scans, it could be. The last Chinese team to come down here had intended to open the bronze door to the burial chamber proper. She had no idea whether they had or not.

      The Beijing University officials who had hired Annja suggested that they felt the last team had indeed made some major discoveries and had then departed by some currently unknown entrance to the great mound before vanishing. There was nothing intrinsically unlikely about that. Such huge structures often had multiple entrances. But she was being asked to play archaeology cop—to find out if the tomb had been plundered and, if possible, to trace the thieves. She was certainly willing enough. Like any real archaeologist she had an unremitting hatred of tomb robbers.

      “Of course that assumes a lot of ifs,” Annja said aloud. Her voice, echoing down the chamber, reassured her. Something about the place bothered her.

      She flashed