Gray moved. She had to be stopped. But where was she?

He edged toward the door himself now, wary of her gun, but he couldn’t let that stop him. Too much was at stake. He tried flicking on his night-vision mode, but all he earned was another snap of flame by his ear. The heads-up display continued its erratic flashing, dazzling and confusing to the eye.

Screw it.

He thumbed the catch and yanked the helmet off.

The fresh wash of air smelled moldy and antiseptic at the same time. Staying low, he carried the helmet in one hand, the dagger in the other. He reached the back wall and hurried toward the door. He could see well enough to tell the swinging door hadn’t moved. The assassin was still in the room.

But where?

And what could he do to stop her? He squeezed the handle of his knife. Gun against dagger. Not good odds.

With his helmet off, he spotted a shift of shadows near the door. He stopped, going dead still. She was crouched three feet from the door, shielded by a table.

Watery light filtered from the hallway, glowing through the windows of the swinging doors. Dawn neared, brightening the passage beyond. The assassin would have to expose herself to make her escape. For the moment, she clung to the shadows of the windowless lab, unsure if her opponent was armed or not.

Gray had to stop playing this Dragon Lady’s game.

With a roundhouse swing, he threw his helmet toward the opposite side of the lab. It landed with a crash and tinkle of glass, shattering one of the old tanks.

He ran toward her position. He only had seconds.

She popped from her hiding place, swiveling to lay down fire in the direction of the noise. At the same time, she leaped gracefully toward the door, seeming to use the recoil from her gun to propel her.