They all huddled around the contents of the safety deposit box and peered at it. Irene reached in first, pulling out something in a leather bag. She sneezed when the material eroded in her hands, then pulled out a black object. “What the hell is this? Another puzzle?”
Laura inspected it with interest. “It’s a rotor cipher.”
Sherlock plucked it from her hands, studying at it, then he looked up. “This is not just any rotor cipher. It is the most valuable cipher in the world.”
“The Turing Cipher,” Mycroft whispered.