¿Where are my boots?” “There.” Thisbe pointed. “Mycroft cleaned them.” They stood in the corner, Cato’s own design, Griffincloth, which, when active, shows in an ever-changing cycle the bones, blood vessels, skeleton, or heat signature of feet, sometimes human, sometimes beast feet, or robotic feet, elastic hinges bending as the tendons would. What schoolbook could be better? Thisbe claims that Cato smiled, but Eureka, blind within the computer’s embrace, cannot corroborate. “¿When was Mycroft here?” he asked.