They climbed up the stairs to the upper floor. Jimmy led the way to a hallway of doors.
"Not all the doors we need to get through will be unlocked." He opened a backpack Trey hadn't noticed and pulled out a black cloth. It unrolled to reveal a strange assortment of tools and electronic gadgets. "This is how we get in. I don't expect you to get past the fancy locks, but you should be able to pick a basic one."
He handed Trey a long thin flat piece of metal and a finer round one.
"This is how it's done." He knelt beside one of the doors and slid in the flat piece, then the round one and in seconds he had the door open.
"You try."
Trey tried to copy the exact motions Jimmy'd made, but the door stayed stubbornly locked.
"You have to feel for it. You want to push the tumblers out of the w
