Kumiko looked down and saw the Maas-Neotek unit in a puddle of gray slush. Beside it lay the clean silver rectangle of a single-edged industrial razorblade. When she picked up the unit, she saw that its case was cracked. She shook moisture from the crack and squeezed it hard in her hand. The tunnel was deserted now. Colin wasn't there. Swain's Walther air pistol was huge and heavy in her other hand.