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Stone approached the door of his apartment, but instead of putting the key in the door handle, he knelt down and squinted into the bolt lock.
“What are you doing?” Talia said.
Stone plucked a blond hair out of the keyhole and showed it to her. “Just being careful,” he said. He dropped the hair and unlocked the bolt.
“What are you talking about?”
As they entered the Spartan apartment, he closed the door and locked it. “This is a third-floor apartment. Not likely someone would try to break in through one of the windows.”
“Would you speak plain English?”
“Christ, you’ve really never been in the field before, have you? Look, it’s simple. I put one of my hairs into the bolt lock when I leave. If someone tried to pick the lock or entered with a key, the hair would get crushed into the
